2.15 p.m. Quantum Tunneling with the DBI Action Saswat Sarangi Columbia University, USA. 16-04-09 Abstract Lately the DBI action has been put to use in various cosmological scenarios, e.g. brane inflation. We study another aspect : Coleman-De Luccia vacuum decay in brane worlds. As with other cosmological cases, we find a new effect that gives the usual CDL result a DBI correction.
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