Results 21 to 30 of about 443,000 (264)
Classical group field theory [PDF]
Journal of Mathematical Physics, 2012 The ordinary formalism for classical field theory is applied to dynamical group field theories. Focusing first on a local group field theory over one copy of SU(2) and then, on more involved nonlocal theories (colored and noncolored) defined over a tensor product of the same group, we address the issue of translation and dilatation symmetries and the ...
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Hamiltonian truncation approach to quenches in the Ising field theory
Nuclear Physics B, 2016 In contrast to lattice systems where powerful numerical techniques such as matrix product state based methods are available to study the non-equilibrium dynamics, the non-equilibrium behaviour of continuum systems is much harder to simulate.
T. Rakovszky +4 more
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Colored Group Field Theory [PDF]
Communications in Mathematical Physics, 2011 Group field theories are higher dimensional generalizations of matrix models. Their Feynman graphs are fat and in addition to vertices, edges and faces, they also contain higher dimensional cells, called bubbles. In this paper, we propose a new, fermionic Group Field Theory, posessing a color symmetry, and take the first steps in a systematic study of ...
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Overlaps after quantum quenches in the sine-Gordon model
Physics Letters B, 2017 We present a numerical computation of overlaps in mass quenches in sine-Gordon quantum field theory using truncated conformal space approach (TCSA). To improve the cut-off dependence of the method, we use a novel running coupling definition which has a ...
D.X. Horváth, G. Takács
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Double field theory on group manifolds [PDF]
Journal of High Energy Physics, 2015 A new version of double field theory (DFT) is derived for the exactly solvable background of an in general left-right asymmetric WZW model in the large level limit. This generalizes the original DFT that was derived via expanding closed string field theory on a torus up to cubic order.
Ralph Blumenhagen +2 more
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Nuclear Physics B, 2015 We study the SU(2)k Wess–Zumino–Novikov–Witten (WZNW) theory perturbed by the trace of the primary field in the adjoint representation, a theory governing the low-energy behavior of a class of strongly correlated electronic systems.
R.M. Konik +3 more
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Bosonic colored group field theory [PDF]
The European Physical Journal C, 2010 Bosonic colored group field theory is considered. Focusing first on dimension four, namely the colored Ooguri group field model, the main properties of Feynman graphs are studied. This leads to a theorem on optimal perturbative bounds of Feynman amplitudes in the "ultraspin" (large spin) limit. The results are generalized in any dimension.
Geloun, Joseph Ben +2 more
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Inverse Renormalization Group in Quantum Field Theory [PDF]
Physical Review Letters, 2022 We propose inverse renormalization group transformations within the context of quantum field theory that produce the appropriate critical fixed point structure, give rise to inverse flows in parameter space, and evade the critical slowing down effect in calculations pertinent to criticality.
Bachtis, Dimitrios +3 more
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LeClair-Mussardo series for two-point functions in Integrable QFT
Journal of High Energy Physics, 2018 We develop a well-defined spectral representation for two-point functions in relativistic Integrable QFT in finite density situations, valid for space-like separations.
B. Pozsgay, I.M. Szécsényi
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QUANTUM GROUP SCHRÖDINGER FIELD THEORY [PDF]
Modern Physics Letters A, 1993 We show that a quantum deformation of quantum mechanics given in a previous work is equivalent to quantum mechanics on a nonlinear lattice with step size ∆x=(1−q)x. Then, based on this, we develop the basic formalism of quantum group Schrödinger field theory in one spatial quantum dimension, and explicitly exhibit the SU q(2) covariant algebras ...
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