Douglas Stanford

from Wikipedia, the free encyclopedia

Douglas Stanford is an American theoretical physicist.

Stanford received his PhD in physics from Stanford University in 2014 and then went to the Institute for Advanced Study .

He worked with Juan Maldacena on the elaboration of his and Leonard Susskind's ER-EPR conjecture of the equivalence of wormholes (the ER stands for Einstein-Rosen Bridge) and EPR for quantum entangled particle pairs. The conjecture arose as a proposal to clear up the information paradox of black holes, which was exacerbated by the fire wall paradox of Joseph Polchinski .

With Stephen Shenker he found support for the EPR-ER hypothesis via AdS / CFT correspondence (among other things, the corresponding spacetime to conforming field theories with strong quantum entanglement and a very weak correlation function was a space-time with a network of intersecting shock wave geometries similar to what would be expected with a long wormhole).

Stanford succeeded in mapping the difficult problem of quantum chaos in quantum field theories through the AdS / CFT correspondence in the gravitation theory of black holes and thus making it easier to deal with. He had previously shown with Juan Maldacena and Stephen Shenker that the quantum mechanics of black holes shows the strongest possible chaotic behavior: the absorption of a small particle can be viewed as a small perturbation in a black hole in the thought experiment ( butterfly effect of the chaos theory on black holes) increases the radius of the hole and its mass and the effect on a particle of mass m that could just escape the sphere of influence of the black hole on its event horizon before absorption would increase exponentially over time (with a Lyapunov exponent proportional to the temperature of the Black hole is). Alexei Kitaev , on the other hand, independently found a solvable quantum field theoretical model system (SYK model for Subir Sachdev , J. Ye, Alexei Kitaev), the quantum chaos of which is precisely described by a Lyapunov exponent of this form. Conversely, Stanford hopes to be able to draw conclusions about the processes inside black holes from such quantum field theoretical models via AdS / CFT correspondence (even if, for example, in Kitaev's model the corresponding black hole was not in the usual space-time, but in 1 + 1 dimensional anti-de-sitter space ). He expanded this further with Edward Witten, among others .

Together with Polchinski, Almheiri, Marolf and Sully, he gave arguments in 2013 for Joseph Polchinski's Feuerwall hypothesis about the inconsistency of an AdS / CFT correspondence of the semiclassical interior of black holes in the anti-de-sitter space to any dual conformal field theories and others Arguments.

For 2018 he received the New Horizons in Physics Prize for his work on improving understanding of the quantum mechanics of black holes via chaos theory. The award is endowed with $ 100,000 (Edward Witten was on the selection committee). In 2019 Stanford was awarded the Gribov Medal of the European Physical Society .

Web links

Individual evidence

  1. ↑ Juan Maldacena, Douglas Stanford, Zhenbin Yang Diving into transversable wormholes, Arxiv 2017
  2. ↑ Shenker, Stanley, Multiple shocks , Journal of High Energy Physics, 2014, No. 12
  3. Jump up ↑ Daniel A Roberts, Douglas Stanford, Leonard Susskind, Localized Shocks, Journal of High Energy Physics, 2015, No. 3, Arxiv 2014
  4. ↑ Maldacena, Shenker, Stanford, A bound on Chaos , Arxiv 2015, JHEP 2016
  5. ↑ Shenker, Stanford, Black holes and the butterfly effect , Arxiv 2013
  6. ↑ Maldacena, Stanford, Comments on the Sachdev-Ye-Kitaev model , Arxiv 2016, Phys. Rev. D, Volume 94, 2016, p. 106002
  7. ↑ Jordan Cotler, Polchinski, Shenker, Stanford et al. a .: Black Holes and Random Matrices, JHEP 2017, Arxiv 2016
  8. ↑ Ahmed Almheiri, Donald Marolf, Joseph Polchinski, Douglas Stanford, James Sully, An apologia for firewalls, Journal of High Energy Physics, No. 9, 2013, Arxiv 2013
  9. ^ Website at Stanford University on the Stanford Prize
personal data
SURNAME Stanford, Douglas
BRIEF DESCRIPTION American theoretical physicist
DATE OF BIRTH 20th century