3.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidad Autónoma de MadridES1.6k papers
- Consejo Superior de Investigaciones CientíficasES897 papers
- Centre National de la Recherche ScientifiqueFR339 papers
- Stanford UniversityUS228 papers
- Institució Catalana de Recerca i Estudis AvançatsES204 papers
- Fermi National Accelerator LaboratoryUS199 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS198 papers
- SLAC National Accelerator LaboratoryUS197 papers
- University of PortsmouthGB194 papers
- ETH ZurichCH192 papers
- Institute for High Energy PhysicsES192 papers
- The Ohio State UniversityUS191 papers
25 papers · 1 filter
An Sl(3,R) multiplet of 8-dimensional type II supergravity theories and the gauged supergravity inside
N. Alonso-Alberca, P. Meessen, T. Ortin
The so-called ``massive 11-dimensional supergravity'' theory gives, for one Killing vector, Romans' massive 10-dimensional supergravity in 10 dimensions, for two Killing vectors an…
7-Branes and Higher Kaluza-Klein Branes
Ernesto Lozano-Tellechea, Tomas Ortin
We present and study a new chain of 10-d T duality related solutions and their 11-d parents whose existence had been predicted in the literature based in U duality requirements in…
Skyrmions in a ferromagnetic Bose-Einstein condensate
U. Al Khawaja, H. T. C. Stoof
The recently realized multicomponent Bose-Einstein condensates provide opportunities to explore the rich physics brought about by the spin degrees of freedom. For instance, we can…
Non-Critical Poincaré Invariant Bosonic String Backgrounds and Closed String Tachyons
E. Alvarez, C. Gomez, L. Hernandez
A new family of non critical bosonic string backgrounds in arbitrary space time dimension and with Poincaré invariance are presented. The metric warping factor and…
Static Gauge Potential from Noncritical Strings
Enrique Alvarez, Juan Jose Manjarin
The static gauge potential between heavy sources is computed from a recently introduced non-critical bosonic string background. When the sources are located at the infinity of the…
Intersecting Brane Worlds
G. Aldazabal, S. Franco, L. E. Ibanez +2
It is known that chiral fermions naturally appear at certain intersections of branes at angles. Motivated by this fact, we propose a string scenario in which different standard mod…
Sigma Model Corrections to the Confining Background
Enrique Alvarez, Manuel Donaire, Lorenzo Hernandez
Sigma model () corrections to the confining string background are obtained. The main result is that the Poincaré invariant ansatz is maintained. Physical conditions for…
A non-Abelian Chern-Simons term for non-BPS D-branes
Bert Janssen, Patrick Meessen
We propose a Chern-Simons term for N coinciding non-BPS D-branes. Demanding full U(N) invariance and compatibility with T-duality, it is shown that it is necessary to introduce new…
D=4, N=1 orientifolds with vector structure
Matthias Klein, Raul Rabadan
We construct compact type IIB orientifolds with discrete groups Z_4, Z_6, Z_6', Z_8, Z_12 and Z_12'. These models are N=1 supersymmetric in D=4 and have vector structure. The possi…
Z_N x Z_M orientifolds with and without discrete torsion
Matthias Klein, Raul Rabadan
We discuss compact four-dimensional Z_N x Z_M type IIB orientifolds. We take a systematic approach to classify the possible models and construct them explicitely. The supersymmetri…
Perturbative construction of self-dual configurations on the torus
M. Garcia Perez, A. Gonzalez-Arroyo, C. Pena
We develop a perturbative expansion which allows the construction of non-abelian self-dual SU(2) Yang-Mills field configurations on the four-dimensional torus with topological char…
D-Branes at Singularities : A Bottom-Up Approach to the String Embedding of the Standard Model
G. Aldazabal, L. E. Ibanez, F. Quevedo +1
We propose a bottom-up approach to the building of particle physics models from string theory. Our building blocks are Type II D-branes which we combine appropriately to reproduce…
Initial Scales, Supersymmetric Dark Matter and Variations of Neutralino-Nucleon Cross Sections
E. Gabrielli, S. Khalil, C. Munoz +1
The neutralino-nucleon cross section in the context of the MSSM with universal soft supersymmetry-breaking terms is compared with the limits from dark matter detectors. Our analysi…
Curved dilatonic brane-worlds and the cosmological constant problem
Natxo Alonso-Alberca, Bert Janssen, Pedro J. Silva
We construct a model for dilatonic brane worlds with constant curvature on the brane, i.e. a non-zero four-dimensional cosmological constant, given in function of the dilaton coupl…
Soft SUSY Breaking, Dilaton Domination and Intermediate Scale String Models
S. A. Abel, B. C. Allanach, L. Ibanez +2
We present an analysis of the low-energy implications of an intermediate scale ~10^{11} GeV string theory. We mainly focus on the evolution of the physical parameters under the ren…
Neutrinos and Gauge Unification
J. A. Casas, J. R. Espinosa, A. Ibarra +1
The approximate unification of gauge couplings is the best indirect evidence for low-energy supersymmetry, although it is not perfect in its simplest realizations. Given the experi…
Supersymmetry of topological Kerr-Newmann-Taub-NUT-aDS spacetimes
N. Alonso-Alberca, P. Meessen, T. Ortin
We extend the topological Kerr-Newman-aDS solutions by including NUT charge and find generalizations of the Robinson-Bertotti solution to the negative cosmological constant case wi…
On the String Description of Confinement
Enrique Alvarez, Cesar Gomez
A non supersymmetric string background, directly derived from the string soft dilaton theorem, is used to compute, in the semiclassical approximation, the expectation value of Wils…
Brane World with Bulk Horizons
Cesar Gomez, Bert Janssen, Pedro J. Silva
A brane world in the presence of a bulk black hole is constructed. The brane tension is fine tuned in terms of the black hole mass and cosmological constant. Gravitational perturba…
Kaehler forms and cosmological solutions in type II supergravities
N. Alonso-Alberca, P. Meessen
We consider cosmological solutions to type II supergravity theories where the spacetime is split into a FRW universe and a Kähler space, which may be taken to be Calabi-Yau. The va…
Supersymmetric Brane-Worlds
N. Alonso-Alberca, P. Meessen, T. Ortin
We present warped metrics which solve Einstein equations with arbitrary cosmological constants in both in upper and lower dimensions. When the lower-dimensional metric is the maxim…
Dilatonic Randall-Sundrum Theory and renormalisation group
Cesar Gomez, Bert Janssen, Pedro Silva
We extend Randall-Sundrum dynamics to non-conformal metrics corresponding to non-constant dilaton. We study the appareance of space-time naked singularities and the renormalization…
Orientifolds with discrete torsion
Mathias Klein, Raul Rabadan
We show how discrete torsion can be implemented in D=4, N=1 type IIB orientifolds. Some consistency conditions are found from the closed string and open string spectrum and from ta…
A D-Brane Alternative to the MSSM
G. Aldazabal, L. E. Ibanez, F. Quevedo
The success of SU(5)-like gauge coupling unification boundary conditions has biased most attempts to embed the SM interactions into a unified structure. Aft…