39619210
Entropy in dilatonic black hole background.
The entropy of a scalar field is calculated semiclassically in the background of a dilatonic black hole. The area and cutoff dependences are normal except in the extremal case, where the area is zero but the entropy nonzero.
7905729
Quantization of Gauge Theories with Anomalies
In this talk, we briefly review the basic concepts of anomalous gauge theories. It has been known for some time how theories with local anomalies can be handled. Recently it has been pointed out that global anomalies, which obstruct the quantization of certain gauge theories in the temporal gauge, get bypassed in canonical quantization.
120593680
Physical solution of chiral Schwinger model with new regularization
Abstract A recently proposed version of the chiral Schwinger model is solved in this paper. The exact fermion propagator is derived in a path integral approach. The operator equations of motion of the bosonised theory are solved. Finally, the operator solution of the fermionic form of the theory is constructed.
118592794
Area law for black hole entropy in the SU(2) quantum geometry approach
Black hole thermodynamics suggests that a black hole should have an entropy given by a quarter of the area of its horizon. Earlier calculations in U(1) loop quantum gravity have led to a dominant term proportional to the area, but there was a correction involving the logarithm of the area. We find however that SU(2) loop quantum gravity can provide an entropy that is strictly proportional to the area as expected from black hole thermodynamics.
119347706
Counting black hole microscopic states in loop quantum gravity
Counting of microscopic states of black holes is performed within the framework of loop quantum gravity. This is the first calculation of the pure horizon states using statistical methods, which reveals the possibility of additional states missed in the earlier calculations, leading to an increase of entropy. Also for the first time a microcanonical temperature is introduced within the framework.
17603490
Scalar field entropy in brane world black holes
A semiclassical calculation of entropy of a scalar field in the background of a class of brane world black holes (BWBH) is carried out in the presence of a brick wall cutoff when the 5D-bulk induced "tidal charge" has generic or extreme values.
43720783
Natural parity states of SU(6) x O(3) in baryon spectra: Evidence for (56,odd-) via Delta states.