Results 11 to 20 of about 291 (152)
BRST supergroups and quantization [PDF]
Physics Letters B, 1989 Abstract We construct the smallest supergroup (K) containing among its generators those of a constraint subgroup K, the BRST charge and the corresponding ghost and antighost operators. When K is diffS1 the critical dimension of string theory can be interpreted as a singularity in the carrier space for the irreducible representations of the ...
Loll, R., Aldaya, V., Navarro-Salas, J.
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BRST quantization of a particle in AdS5 [PDF]
Physics Letters B, 1999 We perform the quantization of a massive particle propagating on AdS_5. We use the twistor formulation in which the action can be brought into a quadratic form. We construct the BRST operator which commutes with AdS_5 isometries forming SU(2,2). The condition of a consistent BRST quantization requires that the AdS energy E is quantized in units of the ...
Claus, Piet +2 more
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BRST-ANTIFIELD QUANTIZATION: A SHORT REVIEW [PDF]
International Journal of Geometric Methods in Modern Physics, 2005 Most of the known models describing the fundamental interactions have a gauge freedom. In the standard path integral, it is necessary to "fix the gauge" in order to avoid integrating over unphysical degrees of freedom. Gauge independence might then become a tricky issue, especially when the structure of the gauge symmetries is intricate.
Henneaux, Marc, Fuster, A., Maas, Axel
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Homotopy Transfer and Effective Field Theory II: Strings and Double Field Theory
Fortschritte der Physik, Volume 70, Issue 2-3, March 2022., 2022 Abstract We continue our study of effective field theory via homotopy transfer of L∞$L_\infty$‐algebras, and apply it to tree‐level non‐Wilsonian effective actions of the kind discussed by Sen in which the modes integrated out are comparable in mass to the modes that are kept. We focus on the construction of effective actions for string states at fixed
Alex S. Arvanitakis +3 more
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The one-loop unimodular graviton propagator in any dimension
Journal of High Energy Physics, 2023 For unimodular gravity, we work out, by using dimensional regularization, the complete one-loop correction to the graviton propagator in any space-time dimension.
Jesus Anero +2 more
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Nilpotent Symmetries of a Model of 2D Diffeomorphism Invariant Theory: BRST Approach
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 Within the framework of the Becchi‐Rouet‐Stora‐Tyutin (BRST) formalism, we discuss the full set of proper BRST and anti‐BRST transformations for a 2D diffeomorphism invariant theory which is described by the Lagrangian density of a standard bosonic string. The above (anti‐)BRST transformations are off‐shell nilpotent and absolutely anticommuting.
R. P. Malik, Michele Arzano
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Geometric BRST quantization, I: Prequantization [PDF]
Communications in Mathematical Physics, 1991 The problem of defining formally the procedure of BRST quantization, which has become the preferred method to quantize gauge systems, is considered. In defining the BRST quantization it seems natural to exploit the symplectic nature of classical BRST. Therefore authors focus their attention in the method of geometric quantization.
Figueroa-O'Farrill, José M. +1 more
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Superfield Approaches to a Model of Bosonic String: Curci‐Ferrari‐Type Restrictions
Advances in High Energy Physics, Volume 2022, Issue 1, 2022., 2022 Exploiting the theoretical potential of the modified Bonora‐Tonin superfield approach (MBTSA) as well as the (anti‐)chiral superfield approach (ACSA) to Becchi‐Rouet‐Stora‐Tyutin (BRST) formalism, we derive the complete set of off‐shell nilpotent (anti‐)BRST symmetry transformations corresponding to the classical two‐ (1 + 1) dimensional (2D ...
A. Tripathi +3 more
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Double Copy from Homotopy Algebras
Fortschritte der Physik, Volume 69, Issue 8-9, September 2021., 2021 It will be shown that the BRST Lagrangian double copy construction of N = 0 supergravity as the ‘square’ of Yang–Mills theory finds a natural interpretation in terms of homotopy algebras. The authors significantly expand on their previous work arguing the validity of the double copy at the loop level, and they give a detailed derivation of the double ...
Leron Borsten +5 more
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BRST-CO-BRST QUANTIZATION OF REPARAMETRIZATION-INVARIANT THEORIES [PDF]
International Journal of Modern Physics A, 1998 We study some reparametrization-invariant theories in the context of the BRST-co-BRST quantization method. The method imposes restrictions on the possible gauge-fixing conditions and leads to well-defined inner product states through a gauge regularization procedure. Two explicit examples are treated in detail.
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