GUP-Corrected van der Waals Black Holes

In this paper, we study the generalized uncertainty principle (GUP) effects for the van der Waals (vdW) black holes. In order to obtain the GUP-corrected solution, we consider GUP-corrected black hole temperature. We also study the thermodynamics and phase transition of GUP-corrected vdW black holes. We compare the differences between thermodynamic properties of both modified and orginal solutions. We show that P-V criticality is physically acceptable in the presence of GUP-correction.Comment: 16 pages, 7 figures, 1 appendix. References added. Accepted versio

Thermal entanglement in the mixed three spin XXZ Heisenberg Model on a triangular cell

We numerically investigate thermal entanglement of the spins (1/2,1) and (1/2,1/2) in the three-mixed (1/2,1,1/2) anisotropic Heisenberg XXZ spin system on a simple triangular cell under an inhomogeneous magnetic field. We show that the external magnetic field induces strong plateau formation in pairwise thermal entanglement for fixed parameters of Hamiltonian in the case of the ferromagnetic and anti-ferromagnetic interactions. We also observe an unexpected critical point at finite temperature in the thermal entanglement of the spins (1/2,1) for antiferromagnetic case while the entanglement of the spins (1/2,1) for ferromagnetic case and the entanglement of the spins (1/2,1/2) for both ferromagnetic and antiferromagnetic cases almost decays exponentially to zero with increasing temperature. The critical point in entanglement of the spins (1/2,1) for antiferromagnetic case may be signature of the quantum phase transition at finite temperature.Comment: 7 pages, 9 figure

Fractional Quantum Heat Engine

In this work, we introduce the concept of the fractional quantum heat engine. We examine the space-fractional quantum Szilard heat engine as an example to show that the space-fractional quantum heat engines can produce higher efficiency than the conventional quantum heat engines.Comment: Revised Versio

Anomalous Cyclic in the Neutrino Oscillations

Neutrino physics is one of the most important topics in particle physics and cosmology. Despite the many physical properties of neutrinos that are understood theoretically and experimentally, it is known that there are many unsolved problems in this area. In this study, we suppose that the deformed space-time caused by the gravitational perturbation can play an important role in neutrino oscillations. We analytically analyzed these effects on the neutrino oscillation and showed that this effect leads to an anomalous cyclic in the neutrino oscillation. The results clearly indicate that these anomalous cyclics depend on the degree of deformation of space-time. The role of this anomaly in neutrino oscillation may be important. There may be a relation between cyclic anomaly and other anomalies of neutrinos such as mass limits, energy limits, oscillation lengths, mixing angles, and speed of neutrinos. The cyclic anomalies might be detected experimentally. If these anomalies are confirmed, it will appear that we need to think more about neutrino physics.Comment: Revised Manuscrip

Investigating bounds on the extended uncertainty principle metric through astrophysical tests

In this paper, we consider the gravitational tests for the extended uncertainty principle (EUP) metric, which is a large-scale quantum correction to Schwarzschild metric. We calculate gravitational redshift, geodetic precession, Shapiro time delay, precession of Mercury and S2 star's orbits. Using the results of experiments and observations, we obtain the lower bounds for the EUP fundamental length scale $L_{*}$. We obtain the smallest bound $L_{*} \sim9\times 10^{-2}$m for gravitational redshift, and the largest bound $L_{*} \sim4\times 10^{10}$m for the precession of S2's orbit.Comment: 16 pages, 1 tabl

GUP-Corrected van der Waals Black Holes

In this paper, we study the generalized uncertainty principle (GUP) effects for the van der Waals (vdW) black holes. We use the GUP-corrected black hole temperature to obtain the modified vdW black hole solution. We also study the thermodynamics and phase transition of GUP-corrected vdW black holes. We show that small black holes are unstable when GUP is taken into account.Comment: 14 pages, 5 figure