Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.7k papers
- Institut de Ciències del CosmosES1.4k papers
- TU Dortmund UniversityDE1.2k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.2k papers
- Heidelberg UniversityDE1.2k papers
- University of EdinburghGB1.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT1.1k papers
- Universitat de ValènciaES1.1k papers
- University of ManchesterGB1.1k papers
- Rutherford Appleton LaboratoryGB1.1k papers
- Imperial College LondonGB1.1k papers
- Massachusetts Institute of TechnologyUS1.1k papers
29 papers · 2 filters
Minimal Inflation
Luis Alvarez-Gaume, Cesar Gomez, Raul Jimenez
Using the universal X superfield that measures in the UV the violation of conformal invariance we build up a model of multifield inflation. The underlying dynamics is the one contr…
New Horizons for Black Holes and Branes
Roberto Emparan, Troels Harmark, Vasilis Niarchos +1
We initiate a systematic scan of the landscape of black holes in any spacetime dimension using the recently proposed blackfold effective worldvolume theory. We focus primarily on a…
The Relaxed Universe: towards solving the cosmological constant problem dynamically from an effective action functional of gravity
Florian Bauer, Joan Sola, Hrvoje Stefancic
We present an unconventional approach for addressing the old cosmological constant (CC) problem in a class of F(R,G) models of modified gravity. For a CC of arbitrary size and sign…
Essentials of Blackfold Dynamics
Roberto Emparan, Troels Harmark, Vasilis Niarchos +1
We develop and significantly generalize the effective worldvolume theory for higher-dimensional black holes recently proposed by the authors. The theory, which regards the black ho…
Maxwell Superalgebra and Superparticle in Constant Gauge Backgrounds
Sotirios Bonanos, Joaquim Gomis, Kiyoshi Kamimura +1
We present SuperMaxwell algebra: an N=1, D=4 algebra with two Majorana supercharges, obtained as the minimal enlargement of superPoincare containing the Maxwell algebra as a subalg…
On the possible running of the cosmological "constant"
Ilya L. Shapiro, Joan Sola
Despite the many outstanding cosmological observations leading to a strong evidence for a nonvanishing cosmological constant (CC) term in the gravitational field equations, the the…
D3-D7 Quark-Gluon Plasmas
Francesco Bigazzi, Aldo L. Cotrone, Javier Mas +3
We present the string dual to finite temperature SU(Nc) N=4 SYM coupled to massless fundamental matter introduced by Nf D7 branes, with Abelian flavor symmetry. The analytic soluti…
Deformed Maxwell Algebras and their Realizations
Joaquim Gomis, Kiyoshi Kamimura, Jerzy Lukierski
We study all possible deformations of the Maxwell algebra. In D=d+1\neq 3 dimensions there is only one-parameter deformation. The deformed algebra is isomorphic to so(d+1,1)\oplus…
Deforming the Maxwell-Sim Algebra
G. W. Gibbons, Joaquim Gomis, C. N. Pope
The Maxwell alegbra is a non-central extension of the Poincaré algebra, in which the momentum generators no longer commute, but satisfy . The charges com…
Tensionless supersymmetric M2 branes in and Giant Diabolo
Jaume Lopez Carballo, Adrian R. Lugo, Jorge G. Russo
We find various supersymmetric configurations of toroidal M2 brane solutions in $\AdS_4 \times S^7$ or, more generally, in $\AdS_4 \times S^7/Z_k$. In this class we identify soluti…
Substituting fields within the action: consistency issues and some applications
Josep M. Pons
In field theory, as well as in mechanics, the substitution of some fields in terms of other fields at the level of the action raises an issue of consistency with respect to the equ…
Non-renormalization conditions for four-gluon scattering in supersymmetric string and field theory
Nathan Berkovits, Michael B. Green, Jorge G. Russo +1
The constraints imposed by maximal supersymmetry on multi-loop contributions to the scattering of four open superstrings in the U(N) theory are examined by use of the pure spinor f…
Translation Invariance, Commutation Relations and Ultraviolet/Infrared Mixing
Salvatore Galluccio, Fedele Lizzi, Patrizia Vitale
We show that the Ultraviolet/Infrared mixing of noncommutative field theories with the Gronewold-Moyal product, whereby some (but not all) ultraviolet divergences become infrared,…
Instability and new phases of higher-dimensional rotating black holes
Oscar J. C. Dias, Pau Figueras, Ricardo Monteiro +2
It has been conjectured that higher-dimensional rotating black holes become unstable at a sufficiently large value of the rotation, and that new black holes with pinched horizons a…
Deformations of Maxwell algebra and their Dynamical Realizations
Joaquim Gomis, Kiyoshi Kamimura, Jerzy Lukierski
We study all possible deformations of the Maxwell algebra. In D=d+1\neq 3 dimensions there is only one-parameter deformation. The deformed algebra is isomorphic to so(d+1,1)\oplus…
Hidden Symmetry from Supersymmetry in One-Dimensional Quantum Mechanics
Alexander A. Andrianov, Andrey V. Sokolov
When several inequivalent supercharges form a closed superalgebra in Quantum Mechanics it entails the appearance of hidden symmetries of a Super-Hamiltonian. We examine this proble…
Renormalization group in Lifshitz-type theories
Roberto Iengo, Jorge G. Russo, Marco Serone
We study the one-loop renormalization and evolution of the couplings in scalar field theories of the Lifshitz type, i.e. with different scaling in space and time. These theories ar…
No-hair theorems for black holes in the Abelian Higgs model
Juan Fernandez-Gracia, Bartomeu Fiol
Motivated by the study of holographic superconductors, we generalize no-hair theorems for minimally coupled scalar fields charged under an Abelian gauge field, in arbitrary dimensi…
Exact Gravitational Dual of a Plasma Ball
Roberto Emparan, Giuseppe Milanesi
We present an exact solution for a black hole localized near an infrared wall in four-dimensional anti-deSitter space. By computing the holographic stress tensor we show that the C…
Revisiting the gauge principle: enforcing constants of motion as constraints
Petr Jizba, Josep Maria Pons
In this paper we examine an alternative formulation of the gauge principle in which the emphasis is shifted from the symmetry transformations to their generators. We show that the…
Holographic multiverse and conformal invariance
Jaume Garriga, Alexander Vilenkin
We consider a holographic description of the inflationary multiverse, according to which the wave function of the universe is interpreted as the generating functional for a lower d…
On the thermodynamics of moving bodies
Jorge G. Russo, Paul K. Townsend
We model the situation in which a photon detector moves with constant velocity in a Minkowski heat-bath by considering an Unruh-DeWitt detector, with variable energy gap ,…
Bare and Induced Lorentz and CPT Invariance Violations in QED
J. Alfaro, A. A. Andrianov, M. Cambiaso +2
We consider QED in a constant axial vector background (Æther). Further Lorentz invariance violations (LIV) might occur owing to radiative corrections. The phenomenology of this mod…
Noether symmetries, energy-momentum tensors and conformal invariance in classical field theory
Josep M. Pons
In the framework of classical field theory, we first review the Noether theory of symmetries, with simple rederivations of its essential results, with special emphasis given to the…