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Tuesday, 5 May, 2015
Slava Rychkov, Zhong Ming Tan

Conformal multiplets of ϕ and ϕ^3 recombine at the Wilson-Fisher fixed point, as a consequence of the equations of motion. Using this fact and other constraints from conformal symmetry, we...

arXiv:1505.00963
Tuesday, 5 May, 2015
Giulia Cusin, Ruth Durrer, Pietro Guarato, Mariele Motta

In this paper we study the generation of primordial perturbations in a cosmological setting of bigravity during inflation. We consider a model of bigravity which can reproduce the Lambda-CDM...

arXiv:1505.01091
Friday, 1 May, 2015
F. Demoures, F. Gay-Balmaz, S. Leyendecker, S. Ober-Blöbaum, T. S. Ratiu, Y. Weinand

The goal of this paper is to derive a structure preserving integrator for geometrically exact beam dynamics, by using a Lie group variational integrator. Both spatial and temporal discretization...

Numerische Mathematik, May 2015, Vol 130, Issue 1, pp 73-123
Friday, 1 May, 2015
T. S. Ratiu, M. S. Romanov, V. N. Samokhin, G. A. Chechkin

The paper is devoted to the two-dimensional Ericksen–Leslie system describing the nematodinamics of liquid crystals. The moment of inertia of molecules is supposed to be strictly positive. The...

Doklady Mathematics, May 2015, Volume 91, Issue 3, pp 354-358
Wednesday, 22 April, 2015
Rupert L. Frank, Christian Hainzl, Benjamin Schlein, Robert Seiringer

We study the time-dependent Bogolubov--de-Gennes equations for generic translation-invariant fermionic many-body systems, and show that even slightly above the critical temperature the order...

arXiv:1504.05885
Monday, 20 April, 2015
Noé Cuneo, Jean-Pierre Eckmann

We study a chain of four interacting rotors (rotators) connected at both ends to stochastic heat baths at different temperatures. We show that for non-degenerate interaction potentials the...

arXiv:1504.04964
Friday, 10 April, 2015
Antonio Amariti, Davide Forcella, Claudius Klare, Domenico Orlando, Susanne Reffert

We engineer a brane picture for the reduction of Seiberg dualities from 4D to 3D, valid also in the presence of orientifold planes. We obtain effective 3D dualities on the circle by T-duality,...

arXiv:1504.02783
Wednesday, 8 April, 2015
Rinat Kashaev

The combinatorial structure of Pachner moves in four dimensions is analyzed in the case of a distinguished move of the type (3,3) and few examples of solutions are reviewed. In particular,...

arXiv:1504.01979
Tuesday, 7 April, 2015
Camille Bonvin, Chris Clarkson, Ruth Durrer, Roy Maartens, Obinna Umeh

We show that at second order ensemble averages of observables and directional averages do not commute due to gravitational lensing. In principle this non-commutativity is significant for a...

arXiv:1504.01676
Monday, 6 April, 2015
Jay Armas, Matthias Blau

We construct several classes of worldvolume effective actions for black holes by integrating out spatial sections of the worldvolume geometry of asymptotically flat black branes. This provides a...

arXiv:1504.01393
Monday, 6 April, 2015
Mahouton Norbert Hounkonnou, Partha Guha, Tudor S. Ratiu

We discuss the appearence of left symmetry in a generalized Virasoro algebra. The necessary and sufficient condition for this algebra to be a quasiassociative algebra with the defined...

arXiv:1504.01284
Friday, 3 April, 2015
Marco Baggio, Matthias R. Gaberdiel, Cheng Peng

The symmetric orbifold of K3 is believed to be the CFT dual of string theory on AdS3 x S3 x K3 at the tensionless point. For the case when the K3 is described by the orbifold T4/Z2, we identify...

arXiv:1504.00926

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