58 citations · 203 across the 6 of their papers we have counts for
10 papers · 1 filter
Consistent Decoupling of Heavy Scalars and Moduli in N=1 Supergravity
Ana Achucarro, Sjoerd Hardeman, Kepa Sousa
We consider the conditions for integrating out heavy chiral fields and moduli in N=1 supergravity, subject to two explicit requirements. First, the expectation values of the heavy…
Kinematic Constraints on Formation of Bound States of Cosmic Strings - Field Theoretical Approach
P. Salmi, A. Achucarro, E. J. Copeland +3
Superstring theory predicts the potential formation of string networks with bound states ending in junctions. Kinematic constraints for junction formation have been derived within…
Effective non-intercommutation of local cosmic strings at high collision speeds
Ana Achucarro, Roland de Putter
We present evidence that Abrikosov-Nielsen-Olesen (ANO) strings pass through each other for very high speeds of approach due to a double intercommutation. In near-perpendicular col…
deSitter vacua from uplifting D-terms in effective supergravities from realistic strings
A. Achucarro, B. de Carlos, J. A. Casas +1
We study the possibility of using the D-term associated to an anomalous U(1) for the uplifting of AdS vacua (to dS or Minkowski vacua) in effective supergravities arising from stri…
A note on the stability of axionic D-term strings
Ana Achucarro, Kepa Sousa
We investigate the stability of a new class of BPS cosmic strings in N=1 supergravity with D-terms recently proposed by Blanco-Pillado, Dvali and Redi. These have been conjectured…
D-term cosmic strings from N=2 Supergravity
Ana Achucarro, Alessio Celi, Mboyo Esole +2
We describe new half-BPS cosmic string solutions in N=2, d=4 supergravity coupled to one vector multiplet and one hypermultiplet. They are closely related to D-term strings in N=1…