Zobrazeno 1 - 10
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pro vyhledávání: '"D'Albuquerque, Luiz C."'
Autor:
de Albuquerque, Luiz C
We perform a detailed analysis of renormalization at one-loop order in the $\lambda\phi^4$ theory with Robin boundary condition (characterized by a constant $c$) on a single plate at $z=0$. For arbitrary $c\geq0$ the renormalized theory is finite aft
Externí odkaz:
http://arxiv.org/abs/hep-th/0507019
Publikováno v:
JHEP0410:024,2004
We study a model for dynamical localization of topology using ideas from non-commutative geometry and topology in quantum mechanics. We consider a collection $X$ of $N$ one-dimensional manifolds and the corresponding set of boundary conditions (self-
Externí odkaz:
http://arxiv.org/abs/hep-th/0407041
Publikováno v:
J.Phys. A37 (2004) 7039-7050
In this work we show how to define the action of a scalar field in a such a way that Robin boundary condition is implemented dynamically, i.e., as a consequence of the stationary action principle. We discuss the quantization of that system via functi
Externí odkaz:
http://arxiv.org/abs/hep-th/0311052
Publikováno v:
Mod.Phys.Lett. A18 (2003) 2517-2524
We use the framework of noncommutative geometry to define a discrete model for fluctuating geometry. Instead of considering ordinary geometry and its metric fluctuations, we consider generalized geometries where topology and dimension can also fluctu
Externí odkaz:
http://arxiv.org/abs/hep-th/0310175
Publikováno v:
Phys.Rev.Lett. 91 (2003) 081301
The spectral principle of Connes and Chamseddine is used as a starting point to define a discrete model for Euclidean quantum gravity. Instead of summing over ordinary geometries, we consider the sum over generalized geometries where topology, metric
Externí odkaz:
http://arxiv.org/abs/hep-th/0305082
Autor:
de Albuquerque, Luiz C., Dalmazi, D.
Publikováno v:
Phys.Rev. E67 (2003) 066108
We present both analytic and numerical results on the position of the partition function zeros on the complex magnetic field plane of the $q=2$ (Ising) and $q=3$ states Potts model defined on $\phi^3 $ Feynman diagrams (thin random graphs). Our analy
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206489
Publikováno v:
Phys.Rev. D65 (2002) 045004
We compute the leading radiative correction to the Casimir force between two parallel plates in the $\lambda\Phi^4$ theory. Dirichlet and periodic boundary conditions are considered. A heuristic approach, in which the Casimir energy is computed as th
Externí odkaz:
http://arxiv.org/abs/hep-th/0108240
Publikováno v:
J.Phys. A34 (2001) L327-332
We present the critical exponents $\nu_{L2}$, $\eta_{L2}$ and $\gamma_{L}$ for an $m$-axial Lifshitz point at second order in an $\epsilon_{L}$ expansion. We introduced a constraint involving the loop momenta along the $m$-dimensional subspace in ord
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108253
We reply to a recent comment by H. W. Diehl and M. Shpot (cond-mat/0106502) criticizing our paper J. Phys. A: Math. Gen. 34 (2001) L327-332. We show that the approximation we use for evaluating higher-loop integrals is consistent with homogeneity. A
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108254
Publikováno v:
JHEP 0107:025,2001
We call attention to a series of mistakes in a paper by S. Nam [JHEP 10 (2000) 044, hep-th/0008083].
Comment: 6 pages, LaTeX, uses JHEP.cls
Comment: 6 pages, LaTeX, uses JHEP.cls
Externí odkaz:
http://arxiv.org/abs/hep-th/0107154