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61 papers · 1 filter
Neutrino oscillations in the Sun probe long-range leptonic forces
J. A. Grifols, E. Masso
Lepton number charges might be the source of long range forces. If one accepts that neutrinos produced in the Sun do indeed oscillate while crossing the interior of the Sun, then t…
Galois actions on Q-curves and Winding Quotients
Francesc Bars, Luis Dieulefait
We prove two "large images" results for the Galois representations attached to a degree Q-curve over a quadratic field : if is arbitrary, we prove maximality of the…
Non hyperelliptic curves of genus three over finite fields of characteristic two
Enric Nart, Christophe Ritzenthaler
Let k=F_q be a finite field of even characteristic. We obtain in this paper a complete classification, up to k-isomorphism, of non singular quartic plane curves defined over k. We…
On Peixoto's Conjecture for Flows on Non-orientable 2-Manifolds
Carlos Gutierrez, Benito Pires
Let M be a non-orientable compact 2-manifold of genus 4. Then there exists a family of quasi-minimal, Kupka-Smale smooth vector fields X_r in M, depending smoothly on 0<=r<e, such…
Scalar meson dynamics in Chiral Perturbation Theory
A. Bramon, R. Escribano, J. L. L. Martinez
A comparison of the linear sigma model (LM) and Chiral Perturbation Theory (ChPT) predictions for pion and kaon dynamics is presented. Lowest and next-to-leading order terms in…
First-order cosmological phase transitions in the radiation dominated era
Ariel Megevand
We consider first-order phase transitions of the Universe in the radiation-dominated era. We argue that in general the velocity of interfaces is non-relativistic due to the interac…