Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Beygi, Alireza"'
Publikováno v:
Phys. Scr. 99, 125234 (2024)
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
We investigate the impact of non-Hermiticity on the thermodynamic properties of interacting fermions by examining bilinear extensions to the $3+1$ dimensional $SU(2)$-symmetric Nambu--Jona-Lasinio (NJL) model of quantum chromodynamics at finite tempe
Externí odkaz:
http://arxiv.org/abs/2210.15503
Publikováno v:
Phys. Rev. D 101, 116001 (2020)
This paper presents a non-Hermitian PT-symmetric extension of the Nambu--Jona-Lasinio (NJL) model of quantum chromodynamics in 3+1 and 1+1 dimensions. In 3+1 dimensions, the SU(2)-symmetric NJL Hamiltonian $H_{\textrm{NJL}} = \bar\psi (-i \gamma^k \p
Externí odkaz:
http://arxiv.org/abs/2004.04011
Publikováno v:
Phys. Rev. D 101, 036005 (2020)
Recently quantum simulators have been constructed to investigate experimentally the most prominent theoretical four-point many-body system described by the Hubbard model. By varying the coupling strength of the four-point interaction in relation to t
Externí odkaz:
http://arxiv.org/abs/1911.02451
Publikováno v:
Phys. Rev. A 99, 062117 (2019)
Relativistic PT-symmetric fermionic interacting systems are studied in 1+1 and 3+1 dimensions. The objective is to include non-Hermitian PT-symmetric interaction terms that give {\it real} spectra. Such interacting systems could describe new physics.
Externí odkaz:
http://arxiv.org/abs/1904.00878
Autor:
Beygi, Alireza, Klevansky, S. P.
Publikováno v:
Phys. Rev. A 98, 022105 (2018)
Fermionic systems differ from bosonic ones in several ways, in particular that the time-reversal operator $T$ is odd, $T^2=-1$. For $PT$-symmetric bosonic systems, the no-signaling principle and the quantum brachistochrone problem have been studied t
Externí odkaz:
http://arxiv.org/abs/1805.10033
Fermionic systems differ from their bosonic counterparts, the main difference with regard to symmetry considerations being that $T^2=-1$ for fermionic systems. In PT-symmetric quantum mechanics an operator has both PT and CPT adjoints. Fermionic oper
Externí odkaz:
http://arxiv.org/abs/1803.10034
Publikováno v:
Phys. Scr. 92 (2017) 015201
By analytically continuing the coupling constant $g$ of a coupled quantum theory, one can, at least in principle, arrive at a state whose energy is lower than the ground state of the theory. The idea is to begin with the uncoupled $g=0$ theory in its
Externí odkaz:
http://arxiv.org/abs/1702.03839
Dai and Pennington have performed a comprehensive analysis of essentially all pion and kaon pair production data from two-photon collisions below 1.5 GeV, including all high statistics results from Belle, as well as the older data from Mark II at SLA
Externí odkaz:
http://arxiv.org/abs/1607.08349
Publikováno v:
Phys. Rev. A 91, 062101 (2015)
This paper examines chains of $N$ coupled harmonic oscillators. In isolation, the $j$th oscillator ($1\leq j\leq N$) has the natural frequency $\omega_j$ and is described by the Hamiltonian $\frac{1}{2}p_j^2+\frac{1}{2}\omega_j^2x_j^2$. The oscillato
Externí odkaz:
http://arxiv.org/abs/1503.05725