Artigo
Analog Model for Quantum Gravity Effects: Phonons in Random Fluids
Fecha
2010-09-20Registro en:
Physical Review Letters. College Pk: Amer Physical Soc, v. 105, n. 13, p. 4, 2010.
0031-9007
10.1103/PhysRevLett.105.131301
WOS:000282054100001
WOS000282054100001.pdf
5704289678296630
Autor
Universidade Estadual Paulista (Unesp)
Centro Brasileiro de Pesquisas Físicas (CBPF)
Resumen
We describe an analog model for quantum gravity effects in condensed matter physics. The situation discussed is that of phonons propagating in a fluid with a random velocity wave equation. We consider that there are random fluctuations in the reciprocal of the bulk modulus of the system and study free phonons in the presence of Gaussian colored noise with zero mean. We show that, in this model, after performing the random averages over the noise function a free conventional scalar quantum field theory describing free phonons becomes a self-interacting model.