Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Martins, Márcio J."'
Autor:
Frahm, Holger, martins, Márcio J.
Publikováno v:
NUcl. Phys. B 995 (2023) 116329
Based on the finite-size analysis of the spectrum of the quantum group invariant deformation of the $OSp(3|2)$ superspin chain we identify the operator content of the conformal field theory describing the model in its scaling limit. We find that the
Externí odkaz:
http://arxiv.org/abs/2307.09412
Autor:
Frahm, Holger, Martins, Márcio J.
Publikováno v:
Nucl. Phys. B 980 (2022) 115799
In this paper we investigate the spectrum of $OSp(n|2m)$ quantum spin chains with free boundary conditions. We compute the surface free energy of these models which, similar to other properties in the thermodynamic limit including the effective centr
Externí odkaz:
http://arxiv.org/abs/2202.13405
Autor:
Frahm, Holger, Martins, Márcio J.
Publikováno v:
In Nuclear Physics, Section B October 2023 995
Publikováno v:
Nucl. Phys. B 946 (2019) 114697
This paper is concerned with the investigation of the massless regime of an integrable spin chain based on the quantum group deformation of the $OSp(3|2)$ superalgebra. The finite-size properties of the eigenspectra are computed by solving the respec
Externí odkaz:
http://arxiv.org/abs/1906.00655
Autor:
Frahm, Holger, Martins, Márcio J.
Publikováno v:
Nucl. Phys. B 930 (2018) 545-562
In this paper we investigate the finite-size properties of the spectrum of quantum spin chains with local spins taken to be the fundamental vector representation of the $OSp(n|2m)$ superalgebra.
Comment: 22 pages, 5 figures
Comment: 22 pages, 5 figures
Externí odkaz:
http://arxiv.org/abs/1802.05191
Autor:
Frahm, Holger, Martins, Márcio J.
Publikováno v:
Nucl. Phys. B 894 (2015) 665-684
The low energy spectrum of a spin chain with $OSp(3|2)$ supergroup symmetry is studied based on the Bethe ansatz solution of the related vertex model. This model is a lattice realization of intersecting loops in two dimensions with loop fugacity $z=1
Externí odkaz:
http://arxiv.org/abs/1502.05305
Autor:
Frahm, Holger, Martins, Márcio J.
Publikováno v:
Nucl. Phys. B 862 [FS] (2012) 504-552
We construct a family of integrable vertex model based on the typical four-dimensional representations of the quantum group deformation of the Lie superalgebra $sl(2|1)$. Upon alternation of such a representation with its dual this model gives rise t
Externí odkaz:
http://arxiv.org/abs/1202.4676
Autor:
Frahm, Holger, Martins, Marcio J.
Publikováno v:
Nucl.Phys.B847:220-246,2011
Based on the exact solution of the eigenvalue problem for the $U_q[sl(2|1)]$ vertex model built from alternating 3-dimensional fundamental and dual representations by means of the algebraic Bethe ansatz we investigate the ground state and low energy
Externí odkaz:
http://arxiv.org/abs/1012.1753
Autor:
Martins, Marcio J.
Publikováno v:
Phys.Rev.Lett. 69 (1992) 2461-2464
We propose and investigate a large class of models possessing resonance factorized S-matrices. The associated Casimir energy describes a rich pattern of renormalization group trajectories related to flows in the coset models based on the simply laced
Externí odkaz:
http://arxiv.org/abs/hep-th/9205024