Considering an entropy-based division of energy transferred into heat and work, we develop
an alternative theoretical framework for the thermodynamic analysis of two-level systems …

An explicit expression for the temperature of an open two-level quantum system is obtained
as a function of local properties under the hypothesis of weak interaction with the …

The ground state magnetic phase diagram of the one-dimensional quantum compass model
(QCM) is studied using the numerical Lanczos method. A detailed numerical analysis of the …

By using the infinite time-evolving block decimation, we study quantum fidelity and
entanglement entropy in the spin-1/2 Heisenberg alternating chain under an external …

We study the magnetic behaviors of a spin-1/2 quantum compass chain (QCC) in a
transverse magnetic field, by means of the analytical spinless fermion approach and …

We have studied the zero-and low-temperature behaviors of anisotropic alternating
antiferromagnetic-ferromagnetic Heisenberg spin-1 2 chains in a transverse magnetic field …

The heat capacity of low-dimensional spin systems is studied using theoretical and
numerical techniques. Keeping only two energy states, the system is mapped onto the two …

Abstract The spin-1/2 isotropic alternating Heisenberg chains with hexamer modulation of
exchange are considered. Recently, the ground state phase diagram of the model was …

The effects of a magnetic field (h) and a space modulation (δ) on the magnetic properties of
a one-dimensional antiferromagnetic–ferromagnetic Heisenberg spin-1/2 model have been …

The one-dimensional quantum compass model (1D-QCM) in an out-plane magnetic field is
investigated by numerical and analytical methods. The presence of the 1D-QCM in an area …