Zobrazeno 1 - 10
of 58
pro vyhledávání: '"S. P. Klevansky"'
Publikováno v:
Physical Review
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::418d684d7666105906948deda2a74b21
http://arxiv.org/abs/2210.15503
http://arxiv.org/abs/2210.15503
Publikováno v:
Physical Review D. 104
In a previous paper it was shown how to calculate the ground-state energy density $\mathcal{E}$ and the $p$-point Green's functions ${G}_{p}({x}_{1},{x}_{2},\dots{},{x}_{p})$ for the $\mathcal{PT}$-symmetric quantum field theory defined by the Hamilt
Publikováno v:
New Journal of Physics, Vol 19, Iss 10, p 105002 (2017)
We study the impact of a spatially homogeneous yet non-stationary dielectric permittivity on the dynamical and spectral properties of light. Our choice of potential is motivated by the interest in ${ \mathcal P }{ \mathcal T }$ -symmetric systems as
Externí odkaz:
https://doaj.org/article/210be308292d4eb686f078ef32016de6
Quantum systems governed by non-Hermitian Hamiltonians with PT symmetry are special in having real energy eigenvalues bounded below and unitary time evolution. We argue that PT symmetry may also be important and present at the level of Hermitian quan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::489d461c979696a837ccff1d5a96fa7f
http://arxiv.org/abs/2103.14864
http://arxiv.org/abs/2103.14864
Autor:
S. P. Klevansky, Alexander Felski
Publikováno v:
Physical Review
We investigate the effects of non-Hermiticity on interacting fermionic systems. We do this by including non-Hermitian bilinear terms into the 3+1 dimensional Nambu--Jona-Lasinio (NJL) model. Two possible bilinear modifications give rise to $\mathcal{
Publikováno v:
Physical Review D. 101
This paper presents a non-Hermitian $\mathcal{PT}$-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 ${\mathcal{H}}_{\mathrm{NJ
Publikováno v:
Physical Review A. 99
Relativistic $\mathcal{PT}$-symmetric fermionic interacting systems are studied in $1+1$ and $3+1$ dimensions. The noninteracting Dirac equation is separately $\mathcal{P}$ and $\mathcal{T}$ invariant. The objective here is to include non-Hermitian $
Publikováno v:
Physical Review
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a5a7fbd1e5a9ea1a25fb69e4928dffb
Publikováno v:
Physical Review D. 98
$\mathcal{P}\mathcal{T}$-symmetric quantum mechanics began with a study of the Hamiltonian $H={p}^{2}+{x}^{2}(ix{)}^{ϵ}$. A surprising feature of this non-Hermitian Hamiltonian is that its eigenvalues are discrete, real, and positive when $ϵ\ensure
Autor:
Alireza Beygi, S. P. Klevansky
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51ed9ab4cf5e6f5a2b5a29494c15bb5d