Malcolm J. Perry

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Malcolm John Perry (born November 13, 1951 in Birmingham ) is a British theoretical physicist and professor at Cambridge University .

Perry went to school in Birmingham and studied physics at Oxford University (St. John's College) and Cambridge University (King's College), where he received his PhD in 1978 under Stephen Hawking . His dissertation was on Black holes and Quantum Mechanics. He then went to Princeton University and from 1986 back to Cambridge as a Fellow of Trinity College.

He deals with gravity theory, Kaluza Klein theories, supergravity and string theory. At Hawking he was involved (partly in collaboration with Gary Gibbons ) on work on Euclidean quantum gravity and Hawking radiation. At Princeton, he and his doctoral student Robert C. Myers developed the Myers-Perry metric as a higher-dimensional analogue of the Kerr metric . With Curtis Callan , Emil Martinec and Daniel Friedan he worked on effective low-energy approximations of string theory.

Together with Hawking and Andrew Strominger , he proposed in 2016 that black holes store information near their event horizon (in the form of soft photons , i.e. those with vanishing energy) and thus still have soft hair (in contradiction to the no-hair theorem), what according to Hawking is a new approach to solving the information paradox of black holes. The essay builds on the work of Hermann Bondi and others in the 1960s, which Strominger had previously taken up to show that the vacuum in quantum gravity is highly degenerate (connected by BMS symmetries), which eliminates a requirement for the information paradox.

Together with colleagues, he proposed a model of inflation without a fundamental scalar field (inflaton), gave arguments against Andrei Linde's idea of ​​perpetual inflation and against the anthropic principle , which is superfluous in string theory.

Fonts

  • with GW Gibbons, SW, Hawking: Path Integrals and the Indefiniteness of the Gravitational Action, Nucl. Phys. B, Volume 138, 1978, pp. 141-150.
  • with GW Gibbons, SW Hawking, Gary Horowitz : Positive mass theorems for black holes, Comm. Math. Phys., Vol. 88, 1983, pp. 295-308
  • with David Gross : Magnetic Monopoles in Kaluza-Klein Theories, Nucl. Phys. B, Vol. 226, 1983, pp. 29-48
  • with C. Callan, E. Martinec, D. Friedan: Strings in background fields, Nucl. Phys. B, Volume 262, 1985, pp. 593-609.
  • with Robert C. Myers: Black Holes in Higher Dimensional Space-Times, Annals of Physics, Volume 172, 1986, pp. 304-347
  • with David Berman: Generalized geometry and M theory, JHEP 1106: 74, 2011, Arxiv .
  • with S. Hawking, Andrew Strominger : Soft Hair on Black Holes, Phys. Rev. Lett., Volume 116, 2016, p. 231301, Arxiv

Web links

Individual evidence

  1. ↑ Malcolm J. Perry in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
  2. ↑ Soft hairs help resolve the black-hole information paradox , Physics World, June 8, 2016
  3. ↑ Dennis Overbye, No Escape From Black Holes? Stephen Hawking Points to a Possible Exit, NY Times, July 6, 2016
  4. ↑ Andrew Strominger, Alexander Zhiboedov: Gravitational Memory, BMS Supertranslations and Soft Theorems , 2014
  5. ↑ Perry, Scott Watson, Fred Adams, Gordon Kane: Inflation without Inflaton (s) , Journal of Cosmology and Astroparticle Physics, 2007
  6. ↑ Laura Mersini-Houghton, Perry, The end of eternal inflation , Classical and Quantum Gravity 31, 2014, p. 165005
  7. ↑ Gordon Kane, Perry, Anna Żytkow, The Beginning of the End of the Anthropic Principle , New Astron. 7, 2002, pp. 45-53.
personal data
SURNAME Perry, Malcolm J.
ALTERNATIVE NAMES Perry, Malcolm John
BRIEF DESCRIPTION British physicist
DATE OF BIRTH November 13, 1951
PLACE OF BIRTH Birmingham