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Quantifying asymmetry via generalized Wigner-Yanase-Dyson skew information

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (29)

Asymmetry is a useful physical resource which quantifies the extent to which a quantum state breaks a symmetry. Based on the generalization of Wigner-......

Hidden symmetry in the biased Dicke model

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (32)

The symmetry operators generating the hidden Z(2) symmetry of the asymmetric quantum Rabi model (AQRM) at bias epsilon is an element of 1/2Z et al (20......

Majorana decomposition for two-qubit pure states

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (29)

The Majorana representation (MR), which represents a quantum state and its evolution with the Majorana stars (MSs) on the Bloch sphere, provides us an......

Ortho-sets and Gelfand spectra

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (29)

Motivated by the relation on quantum states induced by zero transition probability, we introduce the notion of ortho-set, which is a set equipped with......

Exact solution of a quantum spin chain with competing bulk and boundary terms

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (31)

We obtain the exact solution of an anisotropic quantum spin chain including nearest neighbor (NN), next nearest neighbor (NNN), chiral three-spin inte......

Effective entanglement recovery via operators

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (21)

Entanglement is one of essential quantum resources in quantum information processing, playing an important role during quantum communication and compu......

Characterising stochastic motion in heterogeneous media driven by coloured non-Gaussian noise

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (29)

We study the stochastic motion of a test particle in a heterogeneous medium in terms of a position dependent diffusion coefficient mimicking measured ......

Generalized adiabatic approximation to the asymmetric quantum Rabi model: conical intersections and geometric phases

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (40)

The asymmetric quantum Rabi model (AQRM), which describes the interaction between a quantum harmonic oscillator and a biased qubit, arises naturally i......

Hydrodynamic derivation of the Gross-Pitaevskii equation in general Riemannian metric

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (31)

Here we show that the Gross-Pitaevskii equation (GPE) for Bose-Einstein condensates (BECs) admits hydrodynamic interpretation in a general Riemannian ......

Zero helicity of Seifert framed defects

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (29)

Line defects are one-dimensional phase singularities (forming knots and links) that arise in a variety of physical systems. In these systems, isophase......

Evaluations of certain Catalan-Hankel Pfaffians via classical skew orthogonal polynomials

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (26)

This paper is to evaluate certain Catalan-Hankel Pfaffians by the theory of skew orthogonal polynomials. Due to different kinds of hypergeometric orth......

Eigenfunctions of the Perron-Frobenius operator and the finite-time Lyapunov exponents in uniformly hyperbolic area-preserving maps

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (28)

The subleading eigenvalues and associated eigenfunctions of the Perron-Frobenius operator for two-dimensional area-preserving maps are numerically inv......

A Hamiltonian approach for obtaining irreducible projective representations and the k . p perturbation for anti-unitary symmetry groups

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (26)

As is known, the irreducible projective representations (Reps) of anti-unitary groups contain three different situations, namely, the real, the comple......

Aggregation with constant kernel under stochastic resetting

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (29)

The model of binary aggregation with constant kernel is subjected to stochastic resetting: aggregates of any size explode into monomers at independent......

Bounded-from-below conditions for A (4)-symmetric 3HDM

期刊: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021; 54 (32)

Deriving necessary and sufficient conditions for a scalar potential to be bounded from below (BFB) is a difficult task beyond the simplest cases. Rece......

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