Zobrazeno 1 - 10
of 1 554
pro vyhledávání: '"Williamson L"'
Publikováno v:
Human-Animal Interactions, Vol 12, Iss 1 (2024)
Abstract Romantic partners are often key supports for veterans diagnosed with posttraumatic stress disorder (PTSD). However, a PTSD diagnosis among veterans is often associated with lower relationship satisfaction and quality. To help reduce their PT
Externí odkaz:
https://doaj.org/article/3f9b0c55389b433080176a447958fdbb
We identify and interpret the possible quantum thermal machine regimes with a transverse-field Ising model as the working substance. In general, understanding the emergence of such regimes in a many-body quantum system is challenging due to the depen
Externí odkaz:
http://arxiv.org/abs/2410.23710
Autor:
Williamson, L. A.
We show that the conventional Jarzynski equality does not hold for a system prepared in a microcanonical ensemble. We derive a modified equality that connects microcanonical work fluctuations to entropy production, in an analogous way to the Jarzynsk
Externí odkaz:
http://arxiv.org/abs/2409.10810
We show how work can be extracted from number-state coherence in a two-mode Bose-Einstein condensate. With careful tuning of parameters, a sequence of thermodynamically reversible steps transforms a Glauber coherent state into a thermal state with th
Externí odkaz:
http://arxiv.org/abs/2406.12410
Publikováno v:
Phys. Rev. A 110, 013311 (2024)
An easy-plane ferromagnetic spin-1 Bose gas undergoes two Berezinskii-Kosterlitz-Thouless (BKT) transitions, associated with mass and spin superfluidity respectively. We study the effect of axial magnetization on the superfluid properties of this sys
Externí odkaz:
http://arxiv.org/abs/2404.03178
Autor:
Williamson, L. A., Davis, Matthew J.
Publikováno v:
Phys. Rev. B 109, 024310 (2024)
We show that ferromagnetic interactions can enhance the adiabatic performance of a quantum spin chain engine at low temperatures. The enhancement in work output is particular pronounced, increasing exponentially with interaction strength. The perform
Externí odkaz:
http://arxiv.org/abs/2302.01590
Publikováno v:
Phys. Rev. Research 5, L012045 (2023)
A two-dimensional (2D) spin-1 Bose gas exhibits two Berezenskii-Kosterlitz-Thouless (BKT) transitions in the easy-plane ferromagnetic phase. The higher temperature transition is associated with superfluidity of the mass current determined predominant
Externí odkaz:
http://arxiv.org/abs/2207.14497
Publikováno v:
Phys. Rev. Lett. 125, 073602 (2020)
We show that two-time, second-order correlations of scattered photons from planar arrays and chains of atoms display nonclassical features that can be described by a superatom picture of the canonical single-atom $g_2(\tau)$ resonance fluorescence re
Externí odkaz:
http://arxiv.org/abs/2005.04299
Autor:
Williamson, L. A., Ruostekoski, J.
Publikováno v:
Phys. Rev. Research 2, 023273 (2020)
Atoms subject to weak coherent incident light can be treated as coupled classical linear oscillators, supporting subradiant and superradiant collective excitation eigenmodes. We identify the limits of validity of this \emph{linear classical oscillato
Externí odkaz:
http://arxiv.org/abs/2002.01417
Autor:
Williamson, L. A., Blakie, P. B.
Publikováno v:
SciPost Phys. 7, 029 (2019)
Coarsening dynamics, the canonical theory of phase ordering following a quench across a symmetry breaking phase transition, is thought to be driven by the annihilation of topological defects. Here we show that this understanding is incomplete. We sim
Externí odkaz:
http://arxiv.org/abs/1902.10792