Results 21 to 30 of about 2,449 (304)

Finite volume form factors in integrable theories

open access: yesJournal of High Energy Physics
We develop a new method to calculate finite size corrections for form factors in two-dimensional integrable quantum field theories. We extract these corrections from the excited state expectation value of bilocal operators in the limit when the operators
Zoltan Bajnok   +3 more
doaj   +2 more sources

TOPOLOGICAL FIELD THEORIES AND THE PERIOD INTEGRALS [PDF]

open access: yesModern Physics Letters A, 1993
We discuss topological Landau-Ginzburg theories coupled to two-dimensional topological gravity. We point out that the basic recursion relations for correlation functions of the two-dimensional gravity have exactly the same form as the Gauss-Manin differential equations for the period integrals of superpotentials.
Eguchi, Tohru   +2 more
openaire   +4 more sources

Null-Vectors in Integrable Field Theory [PDF]

open access: yesCommunications in Mathematical Physics, 1997
The form factor bootstrap approach allows to construct the space of local fields in the massive restricted sine-Gordon model. This space has to be isomorphic to that of the corresponding minimal model of conformal field theory. We describe the subspaces which correspond to the Verma modules of primary fields in terms of the commutative algebra of local
Babelon, O.   +2 more
openaire   +4 more sources

T T ¯ $$ T\overline{T} $$ -deformation and long range spin chains

open access: yesJournal of High Energy Physics, 2020
We point out that two classes of deformations of integrable models, developed completely independently, have deep connections and share the same algebraic origin. One class includes the T T ¯ $$ T\overline{T} $$ -deformation of 1+1 dimensional integrable
Balázs Pozsgay   +2 more
doaj   +1 more source

Defects in the supersymmetric mKdV hierarchy via Bäcklund transformations

open access: yesJournal of High Energy Physics, 2018
The integrability of the N=1 $$ \mathcal{N}=1 $$ supersymmetric modified Korteweg de-Vries (smKdV) hierarchy in the presence of defects is investigated through the construction of its super Bäcklund transformation. The construction of such transformation
A.R. Aguirre   +4 more
doaj   +1 more source

Stereo integration, mean field theory and psychophysics [PDF]

open access: yesNetwork: Computation in Neural Systems, 1990
Summary: We describe a theoretical formulation for stereo in terms of the Bayesian approach to vision and relate it to psychophysical experiments. The formulation enables us to integrate the depth information from different types of matching primitives, or from different vision modules.
Alan L. Yuille   +2 more
openaire   +5 more sources

Bethe Ansatz equations for the classical A^(1)_n affine Toda field theories [PDF]

open access: yes, 2014
We establish a correspondence between classical A(1)n affine Toda field theories and An Bethe Ansatz systems. We show that the connection coefficients relating specific solutions of the associated classical linear problem satisfy functional relations of ...
Dunning, Clare   +2 more
core   +1 more source

Supersymmetric, integrable boundary field theories [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1996
11 pages, latex with espcrc2.tex/espcrc2.sty Contribution to the proceedings of the ICTP workshop on Recent Developments in Statistical Mechanics and Quantum Field ...
openaire   +3 more sources

Integrable structures in string field theory

open access: yesPhysics Letters B, 2003
11 pages; v.2:some adjustments, some explicit equations ...
Bonora, L., Sorin, A.S.
openaire   +3 more sources

Quantum quenches in integrable field theories

open access: yesNew Journal of Physics, 2010
We study the non equilibrium time evolution of an integrable field theory in 1+1 dimensions after a sudden variation of a global parameter of the Hamiltonian. For a class of quenches defined in the text, we compute the long times limit of the one point function of a local operator as a series of form factors.
Fioretto D, Mussardo, Giuseppe
openaire   +3 more sources

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