4,730 research outputs found
Logarithmic conformal field theories with continuous weights
We study the logarithmic conformal field theories in which conformal weights
are continuous subset of real numbers. A general relation between the
correlators consisting of logarithmic fields and those consisting of ordinary
conformal fields is investigated. As an example the correlators of the
Coulomb-gas model are explicitly studied.Comment: Latex, 12 pages, IPM preprint, to appear in Phys. Lett.
Thermal stability of a special class of black hole solutions in F(R) gravity
In this paper, we work on the topological Lifshitz-like black hole solutions
of a special class of vacuum gravity that are static and spherically
symmetric. We investigate geometric and thermodynamic properties of the
solutions with due respect to the validity of the first law of thermodynamics.
We examine the van der Waals like behavior for asymptotically AdS solutions
with spherical horizon by studying the , and
diagrams and find a consistent result. We also investigate the same behavior
for hyperbolic horizon and interestingly find that the system under study can
experience a phase transition with negative temperature.Comment: 14 pages with 7 captioned figures. Some additional notes are added.
Accepted in EPJ
Quantum teleportation with nonclassical correlated states in noninertial frames
Quantum teleportation is studied in noninertial frame, for fermionic case,
when Alice and Bob share a general nonclassical correlated state. In
noninertial frames two fidelities of teleportation are given. It is found that
the average fidelity of teleportation from a separable and nonclassical
correlated state is increasing with the amount of nonclassical correlation of
the state. However, for any particular nonclassical correlated state, the
fidelity of teleportation decreases by increasing the acceleration.Comment: 10 pages, 3 figures, expanded version to appear in Quantum Inf.
Proces
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