2003/12/15 by Tanmay Vachaspati, Vachaspati, Tanmay · 1 citation
Physics and Astronomy · #Astrophysics (astro-ph) #Black Holes and Theoretical Physics #Condensed Matter (cond-mat) #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Quantum Electrodynamics and Casimir Effect #astro-ph #cond-mat #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.gr-qc/0312069
4 pages; added references and some new discussion; corrected numerical estimate of temperature and discussion of AB interface
openalex publication_date 2003/12/15 · arxiv created 2003/12/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
If certain conditions are met, a propagating phase boundary can be a sonic horizon. Sonic Hawking radiation from such a phase boundary is expected in the quantum theory. The Hawking temperature for typical values of system parameters can be as large as ∼ 0.04 K. Since the setup does not require the physical transport of material, it evades the seemingly insurmountable difficulties of the usual proposals to create a sonic horizon in which fluid is required to flow at supersonic speeds. Issues that are likely to present difficulties that are particular to this setup are discussed. Hawking evaporation of the sonic horizon is also expected and is predicted to lead to a deceleration of the phase boundary.