Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Gupta, K. S."'
We study phase structures of quantum field theories in fuzzy geometries. Several examples of fuzzy geometries as well as QFT's on such geometries are considered. They are fuzzy spheres and beyond as well as noncommutative deformations of BTZ blackhol
Externí odkaz:
http://arxiv.org/abs/1204.6165
Publikováno v:
Eur.Phys.J.C53:295-309,2008
We investigate a Lie algebra-type $ \kappa$-deformed Minkowski space-time with undeformed Lorentz algebra and mutually commutative vector-like Dirac derivatives. There are infinitely many realizations of $ \kappa$-Minkowski space. The coproduct and t
Externí odkaz:
http://arxiv.org/abs/0705.2471
Publikováno v:
Eur.Phys.J.C49:875-889,2007
We analyze a generalization of the quantum Calogero model with the underlying conformal symmetry, paying special attention to the two-body model deformation. Owing to the underlying $ SU(1,1) $ symmetry, we find that the analytic solutions of this mo
Externí odkaz:
http://arxiv.org/abs/hep-th/0609111
Publikováno v:
Class.Quant.Grav.23:5799-5810,2006
We give formulations of noncommutative two dimensional gravities in terms of noncommutative gauge theories. We survey their classical solutions and show that solutions of the corresponding commutative theories continue to be solutions in the noncommu
Externí odkaz:
http://arxiv.org/abs/hep-th/0602265
Publikováno v:
JHEP 0309 (2003) 007
This paper discusses the formulation of the non-commutative Chern-Simons (CS) theory where the spatial slice, an infinite strip, is a manifold with boundaries. As standard star products are not correct for such manifolds, the standard non-commutative
Externí odkaz:
http://arxiv.org/abs/hep-th/0306255
Publikováno v:
Int.J.Mod.Phys. A14 (1999) 1061-1086
In this paper, we discuss the behavior of conformal field theories interacting at a single point. The edge states of the quantum Hall effect (QHE) system give rise to a particular representation of a chiral Kac-Moody current algebra. We show that in
Externí odkaz:
http://arxiv.org/abs/hep-th/9804145
Publikováno v:
Int.J.Mod.Phys. A14 (1999) 2385-2396
We derive a theoretically allowed domain for the charge radius $\rho$ and curvature $c$ of the Isgur-Wise function describing the decay $\Lambda_b \to \Lambda_c l {\bar \nu_l}$. Our method uses crossing symmetry, dispersion relations and analyticity
Externí odkaz:
http://arxiv.org/abs/hep-ph/9802223
The theory of the strong interactions, Quantum Chromodynamics (QCD), has been addressed by a variety of non-perturbative techniques over the decades since its introduction. We have investigated Hamiltonian formulations with different quantization met
Externí odkaz:
http://arxiv.org/abs/hep-th/9801050
Publikováno v:
Mod.Phys.Lett. A12 (1997) 195-204
We calculate the decay width for $\Lambda_b \to \Lambda_c e {\bar \nu}$ in the frame work of a nonrelativistic quark (NRQ) model of heavy baryons where the light quarks play the role of spectators. Our calculation does not make an explicit use of the
Externí odkaz:
http://arxiv.org/abs/hep-ph/9612369
Publikováno v:
Phys.Rev.D55:6780-6787,1997
We calculate the form factors for the semileptonic decays of the $B$ meson to $D$ and $D^*$ mesons in a Bethe-Salpeter model. We show that our model is consistent with the constraints of Heavy Quark Effective Theory (HQET) and we extract the matrix e
Externí odkaz:
http://arxiv.org/abs/hep-ph/9605397