Gravitational wave driving of a gapped holographic system
Anxo Biasi (Instituto Galego de Física de Altas Enerxías (IGFAE), Santiago de Compostela, E-15782, Spain, Departamento de Física de Partículas, Universidade de Santiago de Compostela, Santiago de Compostela, E-15782, Spain); Javier Mas (Instituto Galego de Física de Altas Enerxías (IGFAE), Santiago de Compostela, E-15782, Spain, Departamento de Física de Partículas, Universidade de Santiago de Compostela, Santiago de Compostela, E-15782, Spain); Alexandre Serantes (International Centre for Theoretical Sciences-TIFR, Survey No. 151, Shivakote, Hesaraghatta Hobli, Bengaluru North, 560 089, India)
This work addresses the response of a holographic conformal field theory to a homogeneous gravitational periodic driving. The dual geometry is the AdS-soliton, which models a strongly coupled quantum system in a gapped phase, on a compact domain. The response is a time-periodic geometry up to a driving amplitude threshold which decreases with the driving frequency. Beyond that, collapse to a black hole occurs, signaling decoherence and thermalization in the dual theory. At some frequencies, we also find a resonant coupling to the gravitational normal modes of the AdS-soliton, yielding a nonlinearly bound state. We also speculate on the possible uses of quantum strongly coupled systems to build resonant gravitational wave detectors.