Edward Farhi

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Edward Henry Farhi (born June 26, 1952 in New York City ) is an American theoretical physicist who deals with elementary particle theory , quantum information theory and cosmology .

Career

Farhi attended the Bronx High School of Science and studied physics at Brandeis University with a bachelor's and master's degree in 1973 and received his PhD from Harvard University in 1978 with Howard Georgi . As a post-doctoral student he was at SLAC and in 1980/81 at CERN . In 1982 he became Assistant Professor, 1986 Associate Professor and 1994 Professor at the Massachusetts Institute of Technology . In 2004 he became director of the Center of Theoretical Physics at MIT. In 1984 he received a research grant from the Alfred P. Sloan Foundation ( Sloan Research Fellowship ).

plant

In 1977 he introduced the thrust variable to characterize jets in the QCD . In 1984 he and Robert L. Jaffe investigated the properties of strange matter , a very dense form of quark matter, and he investigated the possibility of stars building up from such matter (strange stars). In the late 1970s and early 1980s, he and Leonard Susskind developed Technicolor theories. In 1982 he investigated particle generation in the new cosmological inflation models proposed by Alan Guth at the time . With Stephen Barr he investigated the possibility of producing dark matter simultaneously with baryonic matter in the early universe. With LF Abbott, he introduced a model of weak interaction in 1981 , which becomes stronger at high energies and leads to confinement .

In 1987 he and Alan Guth showed that the emergence of new universes in the laboratory (from a bubble of false vacuum ) requires an initial singularity, which is an insurmountable obstacle. With Guth and Sean M. Carroll , he also pointed out obstacles for time machines .

In 1996 he and Sam Guttmann proposed an analog quantum computer with continuous time evolution using a Hamilton operator. and in 1997 he and Guttmann investigated the quantum computer variant of calculations using decision trees , where they introduced Quantum Walks . In 2000 he developed the concept of the adiabatic quantum computer with Jeffrey Goldstone and others . In 2007 he showed that there are problems that cannot be accelerated by quantum computers. On the other hand, with the quantum walk model, for example, he showed the exponential acceleration of some problems compared to classical computers by quantum computers (relative to an oracle ). In 2010 he and Peter Shor proposed a quantum money scheme.

Web links

Individual evidence

  1. ↑ Birth and career dates for American Men and Women of Science , Thomson Gale 2004
  2. ^ Farhi, Edward - Author profile . INSPIRE-HEP . Retrieved July 17, 2019.
  3. ↑ Farhi, Quantum Chromodynamics Test for Jets, Physical Review Letters, Volume 39, 1977, pp. 1587-1588.
  4. ↑ Farhi, Jaffe, Strange matter, Phys. Rev. D, Vol. 30, 1984, p. 2379
  5. ^ Charles Alcock, Edward Farhi, Angela Olinto, Strange stars, The Astrophysical Journal, Volume 310, 1986, p. 261.
  6. ↑ Farhi, Susskind, A technicolored GUT, Phys. Rev. D, Vol. 20, 1979, pp. 3404-3411
  7. ↑ Farhi, Susskind, Technicolor, Physics Reports, Volume 74, 1981, pp. 277-321
  8. ↑ Laurence Abbott, Edward Farhi, Mark Wise, Particle production in the new inflationary cosmology, Phys. Lett. B, Volume 117, 1982, pp. 29-33
  9. ↑ Barr, Chivukula, Farhi, Electroweak fermion number violation and the production of stable particles in the early universe, Phys. Lett. B, Vol. 241, 1990, pp. 387-391
  10. ↑ Abbott, Farhi, Are the weak interactions strong ?, Phys. Lett. B, Vol. 101, 1981, pp. 69-72
  11. ↑ Abbott, Farhi, A confining model of the weak interactions, Nucl. Phys. B, Vol. 189, 1981, pp. 547-556
  12. ↑ Farhi, Guth, An obstacle to creating a universe in the laboratory, Phys. Lett. B, Vol. 183, 1987, pp. 149-155, abstract
  13. ↑ Farhi, Guth, Jemal Guven, Is it possible to create a universe in the laboratory by quantum tunneling ?, Nucl. Phys. B, Volume 339, 1990, pp. 417-490
  14. ↑ Online
  15. ↑ Carroll, Farhi, Guth, Gott Time Machines Cannot Exist in an Open (2 + 1) -Dimensional Universe With Timelike Total Momentum, Arxiv 1992
  16. ^ Farhi, Guttmann, An Analog Analogue of a Digital Quantum Computation, Arxiv 1996
  17. ^ Farhi, Guttmann, Quantum Computation and Decision Trees, Phys. Rev. A, Volume 58, 1998, p. 915, Arxiv
  18. ^ Edward Farhi, Jeffrey Goldstone, Sam Gutmann, Michael Sipser: Quantum Computation by Adiabatic Evolution, Arxiv 2000
  19. ↑ Farhi, Goldstone, Gutmann, J. Lapan, A. Lundgren, D. Preda: A quantum adiabatic evolution algorithm applied to random instances of an NP-complete problem, Science, Volume 292, 2001, pp. 472-475
  20. ^ Andrew M. Childs, Richard Cleve, Enrico Deotto, Edward Farhi, Sam Gutmann, Daniel A. Spielman: Exponential algorithmic speedup by a quantum walk, 5th STOC, 2003, pp. 59-68
  21. ↑ Edward Farhi, David Gosset, Avinatan Hassidim, Andrew Lutomirski, Peter Shor, Quantum money from knots, Arxiv 2010
personal data
SURNAME Farhi, Edward
ALTERNATIVE NAMES Farhi, Edward Henry (full name)
BRIEF DESCRIPTION American theoretical physicist
DATE OF BIRTH June 26, 1952
PLACE OF BIRTH New York City