Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Akant, Levent"'
We consider a gravitational plane wave passing through a galactic dark matter halo composed of weakly self-interacting, self-gravitating, Bose-Einstein condensate of ultralight particles. Treating the gravitational wave as a time dependent perturbati
Externí odkaz:
http://arxiv.org/abs/2103.02104
Publikováno v:
Eur. Phys. J. C 81, 66 (2021)
We investigate a field theoretical approach to the Jordan-Brans- Dicke (JBD) theory extended with a particular potential term on a cosmological background by starting with the motivation that the Higgs field and the scale factor of the universe are r
Externí odkaz:
http://arxiv.org/abs/2101.10854
We consider the grand canonical thermodynamics of a noninteracting scalar field in a static spacetime. We take the nonrelativistic limit of thermodynamic quantities in a way that leaves the curved structure of the background geometry intact. Using Me
Externí odkaz:
http://arxiv.org/abs/1705.01461
Assuming that Bogoluibov's theory of weakly interacting dilute Bose gas defines a self-consistent model Hamiltonian, we investigate its thermodynamic limit as we take the volume to infinity, the infinite volume is taken via a sequence of scaled conve
Externí odkaz:
http://arxiv.org/abs/1602.06536
We study the thermodynamics of a quantum field in a spherical shell around a static black hole. We implement brick wall regularization by imposing Dirichlet boundary conditions on the field at the boundaries and analyze their effects on the free ener
Externí odkaz:
http://arxiv.org/abs/1504.07894
The Bose-Einstein condensation for an ideal Bose gas and for a dilute weakly interacting Bose gas in a manifold with nonnegative Ricci curvature is investigated using the heat kernel and eigenvalue estimates of the Laplace operator. The main focus is
Externí odkaz:
http://arxiv.org/abs/1306.4839
Autor:
Akant, Levent
It is shown that Parisi-Sourlas supersymmetry of stochastic quantization is a Cartan model of equivariant cohomology. Equivariant cohomological structure of stochastic quantization of linear and non-linear sigma models are discussed. Witten's nonabel
Externí odkaz:
http://arxiv.org/abs/0804.1890
Autor:
Akant, Levent
We quantize odd dimensional anti-de Sitter spaces by applying the method of deforming contact manifolds proposed by Rajeev. The construction in the present paper consists of the identification of the odd dimensional anti-de Sitter space as a hypersur
Externí odkaz:
http://arxiv.org/abs/0707.2204
Autor:
Akant, Levent
Publikováno v:
J.Math.Phys.49:033512,2008
The Faddeev-Popov gauge fixing in Yang-Mills theory is interpreted as equivariant localization. It is shown that the Faddeev-Popov procedure amounts to a construction of a symplectic manifold with a Hamiltonian group action. The BRST cohomology is sh
Externí odkaz:
http://arxiv.org/abs/hep-th/0703119
Autor:
Akant, Levent, Krishnaswami, Govind S.
Publikováno v:
JHEP 0702:073,2007
This work concerns single-trace correlations of Euclidean multi-matrix models. In the large-N limit we show that Schwinger-Dyson equations imply loop equations and non-anomalous Ward identities. Loop equations are associated to generic infinitesimal
Externí odkaz:
http://arxiv.org/abs/hep-th/0611350