Zobrazeno 1 - 10
of 751
pro vyhledávání: '"MUMFORD, J. A."'
This work theoretically investigates the transition from topology to chaos in a periodically driven system consisting of a quantum top coupled to a spin-1/2 particle. The system is driven by two alternating interaction kicks per period. For small kic
Externí odkaz:
http://arxiv.org/abs/2411.13831
We consider the topological properties of the so-called central spin model that consists of $N$ identical spins coupled to a single distinguishable central spin which arises in physical systems such as circuit-QED and bosonic Josephson junctions coup
Externí odkaz:
http://arxiv.org/abs/2410.23532
Publikováno v:
Phys. Rev. A 110, 043310 (2024)
We perform a theoretical study of the coupled dynamics of two species of Bose-Einstein condensates (BECs) in a double well potential where both the tunneling and the interatomic interactions are driven periodically in time. The population difference
Externí odkaz:
http://arxiv.org/abs/2404.00533
Autor:
Mumford, J.
Floquet topological systems have been shown to exhibit features not commonly found in conventional topological systems such as topological phases characterized by arbitrarily large winding numbers. This is clearly highlighted in the quantum double ki
Externí odkaz:
http://arxiv.org/abs/2301.08225
Autor:
Mumford, J.
We show that two particles interacting via spin exchange exhibit topological features found in one-dimensional single particle lattice models. This is accomplished by absorbing all of the spatial degrees of freedom of the lattices into the spin degre
Externí odkaz:
http://arxiv.org/abs/2211.03338
Autor:
Mumford, J.
By periodically driving a single bosonic Josephson junction (BJJ) with an impurity, a synthetic gauge field is generated in the Fock space of the system. At a critical synthetic gauge flux the ground state undergoes a quantum phase transition which i
Externí odkaz:
http://arxiv.org/abs/2208.01539
Autor:
Mumford, J.
Publikováno v:
Phys. Rev. A 106, 033317 (2022)
A 2D Fock-state lattice (FSL is constructed from the many-body states of two interacting two-mode quantum gases. By periodically driving the interspecies interactions and pulsing the tunneling between the two modes of each gas, a synthetic gauge fiel
Externí odkaz:
http://arxiv.org/abs/2207.00742
Increase Investment in Accessible Physics Labs: A Call to Action for the Physics Education Community
Autor:
Dounas-Frazer, Dimitri R., Gillen, Daniel, Herne, Catherine M., Howard, Erin, Lindell, Rebecca S., McGrew, G I., Mumford, J. Reid, Nguyen, Newton H., Osadchuk, L. C., Crane, Jamie Principato, Pugeda, Tyler M., Reeves, Kevauna, Scanlon, Erin M., Spiecker, David, Xu, Sheila Z.
The American Association of Physics Teachers (AAPT) Committee on Laboratories assembled a task force whose charge was to write an open letter to the physics education community calling for increased investment in accessible lab courses. Contributors
Externí odkaz:
http://arxiv.org/abs/2202.00816
We demonstrate that two-time correlation functions, which are generalizations of out-of-time-ordered correlators (OTOCs), can show 'false-flags' of chaos by exhibiting behaviour predicted by random matrix theory even in a system with classically regu
Externí odkaz:
http://arxiv.org/abs/2108.09391
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 53, 145301 (2020)
We calculate the out-of-time-ordered correlation function (OTOC) of a single impurity qubit coupled to fully a connected many-particle system such as a bosonic Josephson junction or spins with long-range interactions. In these systems the qubit OTOC
Externí odkaz:
http://arxiv.org/abs/1912.00258