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19932026
most citedPrediction and observation of the first antiferromagnetic topological insulator

1.2k citations

Showing 2014 · hep-thShow all

32 papers · 2 filters

hep-th2014★ 10 cited

Statistical properties of states in QED with unstable vacuum

S. P. Gavrilov, D. M. Gitman, A. A. Shishmarev

We study statistical properties of states of massive quantized charged Dirac and Klein-Gordon fields interacting with a background that violates the vacuum stability, first in gene…

hep-th2014★ 8 cited

New realizations of N=2 l-conformal Newton-Hooke superalgebra

Ivan Masterov

By applying Niederer--like transformation, we construct a representation of the N=2 l-conformal Newton-Hooke superalgebra for the case of a negative cosmological constant in terms…

hep-th2014★ 68 cited

Bounce universe from string-inspired Gauss-Bonnet gravity

Kazuharu Bamba, Andrey N. Makarenko, Alexandr N. Myagky +1

We explore cosmology with a bounce in Gauss-Bonnet gravity where the Gauss-Bonnet invariant couples to a dynamical scalar field. In particular, the potential and and Gauss-Bonnet c…

hep-th2014★ 32 cited

Construction of 6D supersymmetric field models in N=(1,0) harmonic superspace

I. L. Buchbinder, N. G. Pletnev

We consider the six dimensional hypermultiplet, vector and tensor multiplet models in (1,0) harmonic superspace and discuss the corresponding superfield actions. The actions for fr…

hep-th2014★ 32 cited

Note on "Finite Field-Energy and Interparticle Potential in Logarithmic Electrodynamics"

D. Gitman, A. Shabad

We propose an identification of the free parameter in the model of nonlinear electrodynamics proposed in P. Gaete and J. Helayel-Neto, Eur. Phys. J. C 74, 2816 (2014) by equating t…

hep-th2014★ 13 cited

Higher-derivative mechanics with N=2 l-conformal Galilei supersymmetry

Ivan Masterov

The analysis previously developed in [J. Math. Phys. 55 (2014) 102901] is used to construct systems which hold invariant under N=2 l-conformal Galilei superalgebra. The models desc…

hep-th2014★ 36 cited

Superintegrability of (generalized) Calogero models with oscillator or Coulomb potential

Tigran Hakobyan, Olaf Lechtenfeld, Armen Nersessian

We deform N-dimensional (Euclidean, spherical and hyperbolic) oscillator and Coulomb systems, replacing their angular degrees of freedom by those of a generalized rational Calogero…

hep-th2014★ 20 cited

Particle creation from the vacuum by an exponentially decreasing electric field

T. C. Adorno, S. P. Gavrilov, D. M. Gitman

We analyze the creation of fermions and bosons from the vacuum by the exponentially decreasing in time electric field in detail. In our calculations we use QED and follow in main t…

hep-th2014★ 51 cited

Aspects of Nonlocality in Quantum Field Theory, Quantum Gravity and Cosmology

A. O. Barvinsky

This paper contains a collection of essays on nonlocal phenomena in quantum field theory, gravity and cosmology. Mechanisms of nonlocal contributions to the quantum effective actio…

hep-th2014★ 9 cited

Peierls brackets in non-Lagrangian field theory

Alexey Sharapov

The concept of Lagrange structure allows one to systematically quantize the Lagrangian and non-Lagrangian dynamics within the path-integral approach. In this paper, I show that any…

hep-th2014★ 97 cited

Classical and quantum stability of higher-derivative dynamics

D. S. Kaparulin, S. L. Lyakhovich, A. A. Sharapov

We observe that a wide class of higher-derivative systems admits a bounded integral of motion that ensures the classical stability of dynamics, while the canonical energy is unboun…

hep-th2014★ 48 cited

Generic Scalar Potentials for Inflation in Supergravity with a Single Chiral Superfield

Sergei V. Ketov, Takahiro Terada

We propose a large class of supergravity models in terms of a single chiral matter superfield, leading to (almost) arbitrary single-field inflationary scalar potentials similar to…

hep-th2014★ 28 cited

Frame-like gauge invariant Lagrangian formulation of massive fermionic higher spin fields in AdS_3 space

I. L. Buchbinder, T. V. Snegirev, Yu. M. Zinoviev

We construct the frame-like gauge-invariant Lagrangian formulation for massive fermionic arbitrary spin fields in three-dimensional space. The Lagrangian and complete set of…

hep-th2014★ 31 cited

Finite BRST-antiBRST Transformations in Lagrangian Formalism

Pavel Yu. Moshin, Alexander A. Reshetnyak

We continue the study of finite BRST-antiBRST transformations for general gauge theories in Lagrangian formalism initiated in [arXiv:1405.0790[hep-th]], with a doublet , $a=…

hep-th2014★ 24 cited

Dynamical realizations of N=1 l-conformal Galilei superalgebra

Ivan Masterov

Dynamical systems which are invariant under N=1 supersymmetric extension of the l-conformal Galilei algebra are constructed. These include a free N=1 superparticle which is governe…

hep-th2014★ 17 cited

Field-Dependent BRST-antiBRST Lagrangian Transformations

Pavel Yu. Moshin, Alexander A. Reshetnyak

We continue our study of finite BRST-antiBRST transformations for general gauge theories in Lagrangian formalism, initiated in [arXiv:1405.0790[hep-th] and arXiv:1406.0179[hep-th]]…

hep-th2014★ 10 cited

A systematic study of finite field dependent BRST-BV transformations in extended field-antifield formalism

Igor A. Batalin, Klaus Bering, Peter M. Lavrov +1

In the framework of extended Lagrangian field-antifield BV formalism we study systematically the role of finite field-dependent BRST-BV transformations. We have proved that…

hep-th2014★ 54 cited

Reconstruction of scalar field theories realizing inflation consistent with the Planck and BICEP2 results

Kazuharu Bamba, Shin'ichi Nojiri, Sergei D. Odintsov

We reconstruct scalar field theories to realize inflation compatible with the BICEP2 result as well as the Planck. In particular, we examine the chaotic inflation model, natural (o…

hep-th2014★ 62 cited

Inflation in Supergravity with a Single Chiral Superfield

Sergei V. Ketov, Takahiro Terada

We propose new supergravity models describing chaotic Linde- and Starobinsky-like inflation in terms of a single chiral superfield. The key ideas to obtain a positive vacuum energy…

hep-th2014★ 7 cited

Formalism of gauge invariant curvatures and constructing the cubic vertices for massive spin-3/2 field in AdS_4 space

I. L. Buchbinder, T. V. Snegirev, Yu. M. Zinoviev

We study the interaction of massive spin-3/2 field with electromagnetic and gravitational fields in the four dimensional AdS space and construct the corresponding cubic vertices. C…

hep-th2014★ 13 cited

Finite BRST-antiBRST Transformations in Generalized Hamiltonian Formalism

Pavel Yu. Moshin, Alexander A. Reshetnyak

We introduce the notion of finite BRST-antiBRST transformations for constrained dynamical systems in the generalized Hamiltonian formalism, both global and field-dependent, with a…

hep-th2014★ 12 cited

A systematic study of finite BRST-BFV transformations in -extended generalized Hamiltonian formalism

Igor A. Batalin, Peter M. Lavrov, Igor V. Tyutin

We study systematically finite BRST-BFV transformations in -extended generalized Hamiltonian formalism. We present explicitly their Jacobians and the form of a solution to t…

hep-th2014★ 24 cited

A systematic study of finite BRST-BV transformations in field-antifield formalism

Igor A. Batalin, Peter M. Lavrov, Igor V. Tyutin

We study systematically finite BRST- BV transformations in the field-antifield formalism. We present explicitly their Jacobians and the form of a solution to the compensation equat…

hep-th2014★ 44 cited

Field-dependent BRST-antiBRST Transformations in Yang-Mills and Gribov-Zwanziger Theories

Pavel Yu. Moshin, Alexander A. Reshetnyak

We introduce the notion of finite BRST-antiBRST transformations, both global and field-dependent, with a doublet , , of anticommuting Grassmann parameters and find ex…