Cosmic R-string in thermal history

Abstract

We study stabilization of an unstable cosmic string associated with spontaneously broken U(1) R symmetry, which otherwise causes a dangerous roll-over process. We demonstrate that in a gauge mediation model, messengers can receive enough corrections from the thermal plasma of the supersymmetric standard model particles to stabilize the unstable modes of the string.

Baryon as impurity for phase transition in string landscape

“…We now define B ≡ 2πα R 2 B and B ≡ 2πα R 2 B (We write the dependence of α explicitly in this subsection). Then, we find 9) for the C cycle and Since there are no off-diagonal parts of the matrices, the determinants are given by the products of two pieces. The DBI action is then given by …”

“…The evolution of the universe (or multiverse) may be affected by their existence in that the catalysts accelerate transitions between vacua. In fact, it has been discussed in field theories that a semi-classical vacuum decay occurs from monopoles or cosmic strings [1][2][3][4] and applied to phenomenological studies of metastable vacua [5][6][7][8][9][10][11]. Moreover, recent developments of string theory compactifications suggest the existence of the landscape of vacua [12][13][14][15].…”

Gravitational correction to fuzzy string in metastable brane configuration

“…Then, in [23][24][25][26][27][28][29], applications to phenomenological model building were discussed in the context of field theories. Our first paper [10] can be regarded as the first realization of this idea in string theories.…”

Radiation of supersymmetric particles from Aharonov-Bohm R-string

“…1 A cosmic string associated with R-symmetry has been studied in [18][19][20][21][22]. Rich physical aspects such as instability of metastable vacua induced by the string and cosmological constraints coming from R-axion radiated by the string have been discussed.…”