53 citations · 108 across the 5 of their papers we have counts for
6 papers
Non-Hermitian extension of the Nambu--Jona-Lasinio model in 3+1 and 1+1 dimensions
Alexander Felski, Alireza Beygi, S. P. Klevansky
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)-…
Continuous quantum phase transition in the fermionic mass solutions of the Nambu-Jona-Lasinio model
Alireza Beygi, S. P. Klevansky, R. H. Lemmer
Recently quantum simulators have been constructed to investigate experimentally the most prominent theoretical four-point many-body system described by the Hubbard model. By varyin…
Relativistic PT-symmetric fermionic theories in 1+1 and 3+1 dimensions
Alireza Beygi, S. P. Klevansky, C. M. Bender
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 {\…
No-signaling principle and quantum brachistochrone problem in -symmetric fermionic two- and four-dimensional models
Alireza Beygi, S. P. Klevansky
Fermionic systems differ from bosonic ones in several ways, in particular that the time-reversal operator is odd, . For -symmetric bosonic systems, the no-signaling…
Analytic structure of eigenvalues of coupled quantum systems
Carl M. Bender, Alexander Felski, Nima Hassanpour +2
By analytically continuing the coupling constant of a coupled quantum theory, one can, at least in principle, arrive at a state whose energy is lower than the ground state of t…
Coupled Oscillator Systems Having Partial PT Symmetry
Alireza Beygi, S. P. Klevansky, Carl M. Bender
This paper examines chains of coupled harmonic oscillators. In isolation, the th oscillator () has the natural frequency and is described by the Hamilto…