Zobrazeno 1 - 10
of 1 191
pro vyhledávání: '"Mumford J."'
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
Publikováno v:
Phys. Rev. Research 1, 033135 (2019)
We show that the light cone-like structures that form in spin chains after a quench are quantum caustics. Their natural description is in terms of catastrophe theory and this implies: 1) a hierarchy of light cone structures corresponding to the diffe
Externí odkaz:
http://arxiv.org/abs/1710.01289
Publikováno v:
Phys. Rev. Lett. 122, 170402 (2019)
Caustics occur widely in dynamics and take on shapes classified by catastrophe theory. At finite wavelengths they produce interference patterns containing networks of vortices (phase singularities). Here we investigate caustics in quantized fields, f
Externí odkaz:
http://arxiv.org/abs/1610.08031