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String theory to the rescue
Joseph Polchinski
The search for a theory of quantum gravity faces two great challenges: the incredibly small scales of the Planck length and time, and the possibility that the observed constants of…
Brane/antibrane dynamics and KKLT stability
Joseph Polchinski
String theory has few or no stable nonsupersymmetric or de Sitter vacua, only metastable ones. Antibranes are a simple source of supersymmetry breaking, as in the KKLT model, but v…
Violations of the Born rule in cool state-dependent horizons
Donald Marolf, Joseph Polchinski
The black hole information problem has motivated many proposals for new physics. One idea, known as state-dependence, is that quantum mechanics must be generalized to describe the…
Chaos in the black hole S-matrix
Joseph Polchinski
Recent work by Shenker, Stanford, and Kitaev has related the black hole horizon geometry to chaotic behavior. We extend this from eternal black holes to black holes that form and t…
Bulk-Boundary Duality, Gauge Invariance, and Quantum Error Correction
Eric Mintun, Joseph Polchinski, Vladimir Rosenhaus
Recently, Almheiri, Dong, and Harlow have argued that the localization of bulk information in a boundary dual should be understood in terms of quantum error correction. We show tha…