IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Spontaneous breaking of a discrete symmetry and holography
Autor/es:
BAJC, B (BAJC, BORUT)1,2; LUGO, AR (LUGO, ADRIAN R.)3,4; STURLA, MB (STURLA, MAURICIO B)
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 2012 p. 119 - 138
ISSN:
1126-6708
Resumen:
We present an exactly solvable model of a scalar field in an AdSd+1 like background interpolating between a Z2 preserving and a Z2 breaking minima of the potential. We define its holographic dual through the AdS/CFT dictionary and argue that at zero temperature the d-dimensional strongly coupled system on the boundary of AdSd+1 exhibits a phase with a spontaneously broken discrete symmetry. In the presence of a black hole in the bulk (T eq 0) we find that, although the metastable phase is present, the discrete symmetry gets restored. We compute exactly the lowest order boundary correlation functions in the spontaneously broken phase at T=0, finding out a pole of the propagator for zero momenta that signals the presence of a massless mode and argue that it should not be present at (T eq 0).