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University of Oklahoma
1.
Grieser, Nathan.
Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC.
Degree: PhD, 2020, University of Oklahoma
URL: http://hdl.handle.net/11244/325626
► This thesis presents a search for a heavy Higgs-like resonance decaying in the R → WW* → ℓνℓν channel using the ATLAS detector at the…
(more)
▼ This thesis presents a search for a heavy Higgs-like resonance decaying in the R → WW
* → ℓνℓν channel using the ATLAS detector at the Large Hadron Collider. The search uses proton-proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 139 fb
-1. Interpretations are given under the narrow-width approximation, Georgi-Machacek model, the radion particle of the Randall-Sundrum graviton model, a HVT model, and a spin-2 graviton of the Randall-Sundrum model.
Advisors/Committee Members: Strauss, Michael (advisor), Baer, Howard (committee member), Marino, Alberto (committee member), Stupak, John (committee member), Fulton, Caleb (committee member).
Subjects/Keywords: Experimental High Energy Physics
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APA (6th Edition):
Grieser, N. (2020). Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/325626
Chicago Manual of Style (16th Edition):
Grieser, Nathan. “Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC.” 2020. Doctoral Dissertation, University of Oklahoma. Accessed March 08, 2021.
http://hdl.handle.net/11244/325626.
MLA Handbook (7th Edition):
Grieser, Nathan. “Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC.” 2020. Web. 08 Mar 2021.
Vancouver:
Grieser N. Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC. [Internet] [Doctoral dissertation]. University of Oklahoma; 2020. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11244/325626.
Council of Science Editors:
Grieser N. Searches For Heavy Resonances In The $R \rightarrow WW \rightarrow \ell\nu\ell\nu$ Decay Channel Using $pp$ Collisions At $\sqrt{s}$ = 13 TeV With The ATLAS Detector At The LHC. [Doctoral Dissertation]. University of Oklahoma; 2020. Available from: http://hdl.handle.net/11244/325626

University of Oklahoma
2.
Kim, Sang Wook.
Quantum Effects in Nodal-line Semimetals.
Degree: PhD, 2020, University of Oklahoma
URL: http://hdl.handle.net/11244/325323
► Topological materials such as Dirac and Weyl semimetals have relativistic quasiparticles at a discrete number of points in the Brillouin zone. Those materials are semimetalas…
(more)
▼ Topological materials such as Dirac and Weyl semimetals have relativistic quasiparticles at a discrete number of points in the Brillouin zone. Those materials are semimetalas in the bulk but host metallic surface states that are protected by either symmetries or topological invariants. This thesis is about a class of quantum materials known as nodal line semimetals (NLSM), which have relativistic quasiparticles forming along lines. In three dimensions (3D), there are three types of crystalline symmetries that protect NLSMs. They can be classified by a combination of those symmetries which are inversion and time reversal symmetry, mirror reflection symmetry, and non-symmorphic symmetry.
In this thesis, we address various 3D Hall effects in a lattice realization of a NLSM known as the hyperhoneycomb lattice. We specifically address the 3D anomalous quantum Hall effect, which occurs through a topological quantum phase transition where the nodal line is gapped out by a Haldane mass. Because of the symmetry of the Haldane mass, the gap closes at a discrete number of points, which form Weyl points connected to each other through topological Fermi arcs. We also examine elastic gauge fields in the hyperhoneycomb lattice that generate nearly flat Landau levels in 3D. We propose a family of strain deformations that can be plausibly implemented with temperature gradients. In the 3D QAH phase, we also calculate dissipationless elastic Hall viscosity tensor.
In the last part, we address the hydrodynamics of relativistic quasiparticles in NLSMs. Hydrodynamics describes the universal behavior of quantum systems when transport is dominated by the collision between particles. It describes the long wavelength deviation of a quantum fluid from local thermal equilibration. We derive electrical conductivity and shear viscosity in the hydrodynamic regime by solving the quantum Boltzmann equation. In general, the lower the ratio between the shear viscosity and the entropy, the more strongly correlated a quantum system is expected to be. We show that the ratio between the shear viscosity and the entropy in NLSMs violates a conjectured lower bound applicable to ultra-correlated quantum systems. We show that both the longitudinal conductivity and the viscosity-entropy ratio scale to zero at low temperature T, in contrast with relativistic systems in general, where the latter saturates to a constant, or Fermi liquids where η/s diverges at low T. We propose that the conjectured lower bound should be revisited to account for unscreened relativistic systems with a Fermi surface.
Advisors/Committee Members: Uchoa, Bruno (advisor), Przebinda, Tomasz (committee member), Santos, Michael (committee member), Marino, Alberto (committee member), Mullen, Kieran (committee member).
Subjects/Keywords: Quantum Hall effect; Topological material; Nodal-line semimetals; Hydrodynamics
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APA ·
Chicago ·
MLA ·
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CSE |
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APA (6th Edition):
Kim, S. W. (2020). Quantum Effects in Nodal-line Semimetals. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/325323
Chicago Manual of Style (16th Edition):
Kim, Sang Wook. “Quantum Effects in Nodal-line Semimetals.” 2020. Doctoral Dissertation, University of Oklahoma. Accessed March 08, 2021.
http://hdl.handle.net/11244/325323.
MLA Handbook (7th Edition):
Kim, Sang Wook. “Quantum Effects in Nodal-line Semimetals.” 2020. Web. 08 Mar 2021.
Vancouver:
Kim SW. Quantum Effects in Nodal-line Semimetals. [Internet] [Doctoral dissertation]. University of Oklahoma; 2020. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11244/325323.
Council of Science Editors:
Kim SW. Quantum Effects in Nodal-line Semimetals. [Doctoral Dissertation]. University of Oklahoma; 2020. Available from: http://hdl.handle.net/11244/325323

University of Oklahoma
3.
Yang, Jin.
Experimental Study of Cs Isotropic and Anisotropic Polyatomic Rydberg Molecules.
Degree: PhD, 2019, University of Oklahoma
URL: http://hdl.handle.net/11244/321267
► In this thesis, we investigate few-body physics and many-body physics of ultralong-range Rydberg molecules. Ultralong-range Rydberg molecules are formed through scattering processes between Rydberg electrons…
(more)
▼ In this thesis, we investigate few-body physics and many-body physics of ultralong-range Rydberg molecules. Ultralong-range Rydberg molecules are formed through scattering processes between Rydberg electrons and ground state atoms. The huge size of the Rydberg electron's orbit makes the Rydberg electron able to interact with more than one ground state atom in cold atomic gases with atom number densities from 10
12 cm
-3 to 10
14 cm
-3. In cold atomic gases, the ground state atoms on average are far away from each other. They are weakly interacting. Depending on the angular momentum state of the Rydberg electron, two types of polyatomic Rydberg molecules have been studied. When the Rydberg electron is in an ns state, the isotropic probability distribution of the Rydberg electron makes the Rydberg electron interact with different ground state atoms equally. The total binding energy is a summation of the binding energy from each scattering process. These additive interactions have been studied using Cs 6s+83s and 6s+90s polyatomic Rydberg molecules in this thesis. When the Rydberg electron is in an l>0 angular momentum state, spatial correlations between different ground state atoms are established through the anisotropic probability distribution of the Rydberg electron. The total binding energy depends on the relative positions of different ground state atoms. These nonadditive interactions are studied using Cs 6s+6s+34d and 6s+6s+36d triatomic Rydberg molecules in this thesis.
Advisors/Committee Members: Shaffer, James P (advisor), Schwettmann, Arne (committee member), Marino, Alberto (committee member), Uchoa, Bruno (committee member), Neeman, Henry (committee member).
Subjects/Keywords: Rydberg Molecules; Many-body Physics; Ultracold Scattering; Rydberg Atoms
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Yang, J. (2019). Experimental Study of Cs Isotropic and Anisotropic Polyatomic Rydberg Molecules. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/321267
Chicago Manual of Style (16th Edition):
Yang, Jin. “Experimental Study of Cs Isotropic and Anisotropic Polyatomic Rydberg Molecules.” 2019. Doctoral Dissertation, University of Oklahoma. Accessed March 08, 2021.
http://hdl.handle.net/11244/321267.
MLA Handbook (7th Edition):
Yang, Jin. “Experimental Study of Cs Isotropic and Anisotropic Polyatomic Rydberg Molecules.” 2019. Web. 08 Mar 2021.
Vancouver:
Yang J. Experimental Study of Cs Isotropic and Anisotropic Polyatomic Rydberg Molecules. [Internet] [Doctoral dissertation]. University of Oklahoma; 2019. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11244/321267.
Council of Science Editors:
Yang J. Experimental Study of Cs Isotropic and Anisotropic Polyatomic Rydberg Molecules. [Doctoral Dissertation]. University of Oklahoma; 2019. Available from: http://hdl.handle.net/11244/321267

University of Oklahoma
4.
Akin, Thomas.
Electromagnetically Induced transparency with Laguerre-Gaussian laser modes in ultracold rubidium.
Degree: PhD, 2015, University of Oklahoma
URL: http://hdl.handle.net/11244/14587
► We demonstrate electromagnetically induced transparency (EIT) using lasers in the Laguerre- Gaussian mode. The probe transmission is studied in an ultracold gas for the D2…
(more)
▼ We demonstrate electromagnetically induced transparency (EIT) using lasers in the Laguerre- Gaussian mode. The probe transmission is studied in an ultracold gas for the D2 line in both 85Rb and 87Rb. We consider the Lambda EIT configuration when the control laser is in the Laguerre-Gaussian mode. We compare these results to a similar configuration, but with the control laser in the fundamental laser mode. We model the transmission of a probe laser under both configurations, and we find good agreement with the experiment. We conclude that the use of Laguerre- Gaussian modes in electromagnetically induced transparency results in narrower resonance linewidths as compared to uniform control laser intensity. The narrowing of the linewidth is caused by the spatial distribution of the Laguerre-Gaussian intensity profile. This narrowing is dependent on the relative beam sizes between the control laser and the probe laser. We examine the EIT spectrum character- istics changing parameters of the Laguerre-Gaussian control laser, such as beam waist and Rabi frequency. We found that the EIT resonance is optimized when the Laguerre-Gaussian control and the Gaussian probe have the same waist size. Additionally, the spatial structure of the probe transmission is manipulated us- ing the Laguerre-Gaussian control laser. A control laser in the Laguerre-Gaussian mode is characterized with annular intensity profiles. This results in the increased transmission of the probe in regions of high control intensity, and high absorption in the central, dark region of the Laguerre-Gaussian mode. We transferred the image of the control laser to the probe laser.
Advisors/Committee Members: Abraham, Eric (advisor), Sievers, Karl (committee member), Marino, Alberto (committee member), Morrison, Michael (committee member), Sellers, Ian (committee member).
Subjects/Keywords: Physics, Atomic.; Laguerre-Gaussian mode; Electromagnetically Induced Transparency; Diffractive Optics
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Akin, T. (2015). Electromagnetically Induced transparency with Laguerre-Gaussian laser modes in ultracold rubidium. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/14587
Chicago Manual of Style (16th Edition):
Akin, Thomas. “Electromagnetically Induced transparency with Laguerre-Gaussian laser modes in ultracold rubidium.” 2015. Doctoral Dissertation, University of Oklahoma. Accessed March 08, 2021.
http://hdl.handle.net/11244/14587.
MLA Handbook (7th Edition):
Akin, Thomas. “Electromagnetically Induced transparency with Laguerre-Gaussian laser modes in ultracold rubidium.” 2015. Web. 08 Mar 2021.
Vancouver:
Akin T. Electromagnetically Induced transparency with Laguerre-Gaussian laser modes in ultracold rubidium. [Internet] [Doctoral dissertation]. University of Oklahoma; 2015. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11244/14587.
Council of Science Editors:
Akin T. Electromagnetically Induced transparency with Laguerre-Gaussian laser modes in ultracold rubidium. [Doctoral Dissertation]. University of Oklahoma; 2015. Available from: http://hdl.handle.net/11244/14587

University of Oklahoma
5.
Zhang, Lu.
THEORETICAL STUDIES OF MULTI-MODE NOON STATES FOR APPLICATIONS IN QUANTUM METROLOGY AND PROPOSALS OF EXPERIMENTAL SETUPS FOR THEIR GENERATION.
Degree: PhD, 2018, University of Oklahoma
URL: http://hdl.handle.net/11244/299794
► Quantum entanglement is a fascinating physical resource that is central to the field of quantum information processing with important applications in such areas as quantum…
(more)
▼ Quantum entanglement is a fascinating physical resource that is central to the field of quantum information processing with important applications in such areas as quantum computing, quantum communication, quantum metrology, and quantum imaging.
It describes the physical phenomenon in which the quantum state of a multipartite system cannot be written as consisting of constituents that are independent of each other. In this case, the state of the system is called an entangled state. In this
dissertation, the entanglement of photons – the elementary excitations of the quantized electromagnetic field – is studied. A focus is made on a particular type of entangled states of light called the d-mode N-photon NOON state, which consists of N photons with the N photons as an ensemble appearing at d orthogonal modes simultaneously and are inseparable.
In quantum metrology, a field that investigates the ultimate precision of measurements of unknown physical parameters, the two-mode NOON state has been studied extensively with respect to its ability to achieve super-resolution and super-sensitivity in the estimation of a single parameter. A lot of theoretical research has been conducted on the generation of two-mode NOON states, and two-mode NOON states with up to 4 photons have been experimentally and efficiently produced. On the other hand, recently there has been increasing interest in the study of the simultaneous estimation of multiple parameters. Accordingly, the multi-mode NOON state has been attracting more and more attention in view of its potential for enhanced efficiency as compared to using multiple two-mode NOON states separately to estimate the parameters. Nevertheless, no known generation method of multi-mode NOON states with more than 2 photons or 2 modes exists so far.
In this dissertation, several scalable generation methods of multi-mode NOON states are proposed. These methods take advantage of multi-photon quantum interference and they can theoretically be applied to produce NOON states with an
arbitrary number of modes and an arbitrary number of photons. The intrinsic generation probability for each method is calculated, and the methods are compared in regards to their feasibility and efficiency. The advantages of using multi-mode NOON
states in quantum metrology are also analyzed and discussed in detail.
Advisors/Committee Members: Chan, Kam Wai Clifford (advisor), Marino, Alberto (committee member), Cheng, Samuel (committee member), Huck, Robert (committee member), MacDonald, Gregory (committee member), Verma, Pramode (committee member).
Subjects/Keywords: Physics, Optics.; Engineering, Electronics and Electrical.; Physics, General.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhang, L. (2018). THEORETICAL STUDIES OF MULTI-MODE NOON STATES FOR APPLICATIONS IN QUANTUM METROLOGY AND PROPOSALS OF EXPERIMENTAL SETUPS FOR THEIR GENERATION. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/299794
Chicago Manual of Style (16th Edition):
Zhang, Lu. “THEORETICAL STUDIES OF MULTI-MODE NOON STATES FOR APPLICATIONS IN QUANTUM METROLOGY AND PROPOSALS OF EXPERIMENTAL SETUPS FOR THEIR GENERATION.” 2018. Doctoral Dissertation, University of Oklahoma. Accessed March 08, 2021.
http://hdl.handle.net/11244/299794.
MLA Handbook (7th Edition):
Zhang, Lu. “THEORETICAL STUDIES OF MULTI-MODE NOON STATES FOR APPLICATIONS IN QUANTUM METROLOGY AND PROPOSALS OF EXPERIMENTAL SETUPS FOR THEIR GENERATION.” 2018. Web. 08 Mar 2021.
Vancouver:
Zhang L. THEORETICAL STUDIES OF MULTI-MODE NOON STATES FOR APPLICATIONS IN QUANTUM METROLOGY AND PROPOSALS OF EXPERIMENTAL SETUPS FOR THEIR GENERATION. [Internet] [Doctoral dissertation]. University of Oklahoma; 2018. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11244/299794.
Council of Science Editors:
Zhang L. THEORETICAL STUDIES OF MULTI-MODE NOON STATES FOR APPLICATIONS IN QUANTUM METROLOGY AND PROPOSALS OF EXPERIMENTAL SETUPS FOR THEIR GENERATION. [Doctoral Dissertation]. University of Oklahoma; 2018. Available from: http://hdl.handle.net/11244/299794

University of Oklahoma
6.
Ortiz, Javier Alejandro.
Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas.
Degree: PhD, 2020, University of Oklahoma
URL: http://hdl.handle.net/11244/325369
► An analytical model is proposed to characterize and quantify the effects that diffracted fields have on the performance of phased array antennas. The work involves…
(more)
▼ An analytical model is proposed to characterize and quantify the effects that diffracted fields have on the performance of phased array antennas. The work involves the combination of diffraction theory techniques and how each can be used to analyze this phenomena with the use of antenna elements as sources. As these antenna elements are placed along a ground plane of relatively large size in terms of λ diffracted fields can perturb the expected cross-polarization radiation performance of the element. As the element is moved along the ground plane and at different relative distances from the edges, depending on the electromagnetic radiation nature of the antenna structure, these edges produce diffracted fields that can affect the performance of the co- as well as the cross-polarized fields of the antenna. This is of great importance when working with highly pure polarized elements for applications that require low cross-polarization. The expansion of an equivalent current model is proposed where the antenna element can be expressed at a distance from the edges and the diffracted fields generated from such edges are calculated from these equivalent currents. Every element position over the ground plane will generate a theoretical equivalent current that would radiate the diffracted fields, which then contribute to the overall array pattern. This work shows a successful implementation of the proposed technique and how this can be combines with finite element method (FEM) analysis in order to predict the radiated fields from different element positions providing an advantage over resource hungry simulations. This proves to be an effective tool by reducing the calculation time substantially for scalable applications where the phased array can be over thousands of elements and extremely difficult to gather resources to produce a predicted pattern.
Advisors/Committee Members: Salazar, Jorge (advisor), Aboserwal, Nafati (committee member), Sigmarsson, Hjalti (committee member), Palmer, Robert (committee member), Yu, Tian-You (committee member), Marino, Alberto (committee member).
Subjects/Keywords: Phased Array Antennas; Antennas; Diffraction; Dual-Polarization
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ortiz, J. A. (2020). Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/325369
Chicago Manual of Style (16th Edition):
Ortiz, Javier Alejandro. “Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas.” 2020. Doctoral Dissertation, University of Oklahoma. Accessed March 08, 2021.
http://hdl.handle.net/11244/325369.
MLA Handbook (7th Edition):
Ortiz, Javier Alejandro. “Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas.” 2020. Web. 08 Mar 2021.
Vancouver:
Ortiz JA. Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas. [Internet] [Doctoral dissertation]. University of Oklahoma; 2020. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11244/325369.
Council of Science Editors:
Ortiz JA. Impact of Edge Diffraction in Dual-Polarized Phased Array Antennas. [Doctoral Dissertation]. University of Oklahoma; 2020. Available from: http://hdl.handle.net/11244/325369
.