Graceful exit via monopoles in a theory with O'Raifeartaigh type supersymmetry breaking

Abstract

We study the stability of supersymmetry breaking metastable vacua and supersymmetric vacua in the presence of solitons. The metastable vacua of supersymmetric QCD and those found elsewhere such as in models based on the SU(5) grand unified group support the existence of topological solitons. The vacua containing such topological defects can become unstable against decay into lower energy configurations. We show for a specific model that a finite region of the available parameter space of couplings becomes disallowed due to the presence of monopoles. In a manner similar to previous studies based on cosmic strings, it is shown that soliton solutions arising in supersymmetric theories can put constraints on the range of allowed values of the couplings arising in the theories. Implications for cosmology are discussed.

Stability Longevity and All That: False Vacua and Topological Defects

“…Related work of similar nature can be found in [33] [34]. More recently this phenomenon has drawn attention in other field theoretic contexts [35] [36], and in superstring theory, similar results are obtained regarding brane induced vacuum decay.…”

Baryon as impurity for phase transition in string landscape

“…Then, the following bound state is formed: 6) where M represents the D3-brane wrapping the C cycle. This can be identified with a magnetic monopole as proposed by [29].…”

“…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.…”