Zobrazeno 1 - 10
of 8 427
pro vyhledávání: '"two-state system"'
A comparative study of entropy dynamics as an indicator of physical behavior in an open two-state system with balanced gain and loss is presented. We distinguish the perspective taken in utilizing the conventional framework of Hermitian-adjoint state
Externí odkaz:
http://arxiv.org/abs/2404.03492
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Sasaki, Ken-ichi
Publikováno v:
Phys. Scr. 99 (2024) 065123
In scenarios where electrons are confined to a flat surface, such as graphene, quantizing electrodynamics reveals intriguing insights. We find that one of Maxwell's equations manifests as part of the Hamiltonian, leading to novel constraints on physi
Externí odkaz:
http://arxiv.org/abs/2303.08395
There is growing interest in viable quantum theories with PT-symmetric non-Hermitian Hamiltonians, but a formulation of transition matrix elements consistent with positivity and perturbative unitarity has so far proved elusive. This Letter provides s
Externí odkaz:
http://arxiv.org/abs/2302.11666
Autor:
Crowley, Philip JD, Chandran, Anushya
Publikováno v:
SciPost Phys. 12, 103 (2022)
The eigenstate thermalisation hypothesis (ETH) is a statistical characterisation of eigen-energies, eigenstates and matrix elements of local operators in thermalising quantum systems. We develop an ETH-like ansatz of a partially thermalising system c
Externí odkaz:
http://arxiv.org/abs/2104.03312
Autor:
Yamamoto, Tsuyoshi, Kato, Takeo
Publikováno v:
Phys. Rev. B 98, 245412 (2018)
We present a theoretical study of the quantum critical behavior in heat transport via a two-state system with sub-ohmic reservoirs. We calculate the temperature dependence of the thermal conductance near the quantum phase transition via the continuou
Externí odkaz:
http://arxiv.org/abs/1809.03688
Autor:
Takahashi, Ryuji, Sugimoto, Naoyuki
Publikováno v:
J. Phys. Soc. Jpn. 87, 104701 (2018)
Previously, we have shown that the transition probability of the Landau-Zener problem in periodic lattice systems becomes large by taking into account the nonlinearity of the energy spectra, compared with the probability by the conventional Landau-Ze
Externí odkaz:
http://arxiv.org/abs/1809.10854
Publikováno v:
New J. Phys. 20, 093014 (2018)
Heat transport in spin-boson systems near the thermal equilibrium is systematically investigated. An asymptotically exact expression for the thermal conductance in a low-temperature regime wherein transport is described via a co-tunneling mechanism i
Externí odkaz:
http://arxiv.org/abs/1803.07987
Autor:
Howie, A. J., Macaulay, A. B.
Publikováno v:
Biometrika, 1972 Aug 01. 59(2), 395-406.
Externí odkaz:
https://www.jstor.org/stable/2334584
Publikováno v:
Phys. Rev. A 96, 022112 (2017)
Exceptional points are degeneracies in non-Hermitian systems. A two-state system with parity-time (PT) symmetry usually has only one exceptional point beyond which the eigenmodes are PT-symmetry broken. The so-called symmetry recovery, i.e., eigenmod
Externí odkaz:
http://arxiv.org/abs/1701.03640