Jump to content

Ram Brustein

From Wikipedia, the free encyclopedia

}}

Ram (Ramy) Brustein (Hebrew: רמי ברושטיין; born: 1957) is a Professor in the Department of Physics at Ben-Gurion University (BGU), Israel, where he holds the Albert Einstein Chair in Theoretical Physics.[1][2]

His research focuses on theoretical physics and cosmology.[3]

Early life and education

[edit]

Ramy Brustein was born in kibbutz Metzer, Israel. He began his academic studies in Physics and Mathematics at Tel Aviv University in 1978, and received his B.Sc. (with honors) in 1982, and M.Sc. (with honors) in 1984.[4]

He continued his Ph.D. studies at Tel Aviv University until 1988. His thesis on “String Propagation in Background Fields and Conformal Field Theories in Two Dimensions” was supervised by Prof. Shimon Yankielowicz.[1][5]

Career

[edit]

In 1988 Brustein was a postdoctoral research fellow in the University of Texas at Austin In the Weinberg theory group, and later at the University of Pennsylvania. Brustein became a fellow at CERN in 1993, and two years later he joined Ben-Gurion University as a Senior Lecturer. He became an associate professor in 2000, and was promoted to full professor of Physics in 2004.[6][7]

Brustein also held several official positions at Ben Gurion University, including Dean of the Kreitman School of Advanced Graduate Studies, Senate Member and Chair of the Department of Physics.[8][9]

Research

[edit]

Brustein’s research focuses on the interface between fundamental physics and early universe cosmology as well as black holes. His work integrates Einstein's theory of gravity and its generalizations with string theory, particularly in the study of gravitational singularities.[10][11][12][13]

In 1992, Brustein showed that cosmological inflation is unlikely within simple string theoretic models, suggesting the need for an alternative origin of the Universe.[11] In 1995, Brustein predicted that such an alternative origin of the Universe, which includes a pre-big-bang phase should produce a strong gravitational wave signal, which could be detetected by gravitational wave observations.[12]

In 2000, he proposed a fundamental bound on the information capacity (entropy) of the Universe which suggests that the big-bang should be replaced by a quantum phase, preceded by a pre-big-bang phase.[14]

In 2019  Brustein the “frozen star model”, which describes a black hole mimicker: an ultracompact astrophysical object that is free of singularities, lacks a horizon, but yet can mimic all of the observable properties of black holes.[13][15][16]

Awards and honors

[edit]

Brustein received the Alon Fellowship from the Council for Higher Education in Israel in 1994. He was also a research fellow at CERN and at the Center for Advanced Studies, Ludwig Maximilians University and a short term member at the Institute for Advanced Study in Princeton. In 2016 he became the incumbent of the Albert Einstein Chair in Theoretical Physics.[7][3][17][2]

References

[edit]
  1. ^ a b "INSPIRE". inspirehep.net. Retrieved 2025-03-18.
  2. ^ a b "PRESIDENT'S REPORT 2020" (PDF). Americans for Ben-Gurion University.
  3. ^ a b "Prof. Ramy Brustein, Ph.D." Ludwig-Maximilians-Universität München. Retrieved 2025-04-17.
  4. ^ "CURRICULUM VITAE AND LIST OF PUBLICATIONS" (PDF). Ben-Gurion University.
  5. ^ "⁨4,571 תארים חולקו השנה באוניברסיטה⁩ | ⁨חדשות⁩ | 7 נובמבר 1989 | אוסף העיתונות | הספרייה הלאומית". www.nli.org.il (in Hebrew). Retrieved 2025-04-17.
  6. ^ "The Role of the Superstring Dilation in Cosmology and Particle Physics" (PDF). CERN.
  7. ^ a b "מינויים חדשים באוניברסיטת בן-גוריון". www.news1.co.il (in Hebrew). Retrieved 2025-04-17.
  8. ^ University, Ben Gurion. "היסטוריה של המחלקה לפיזיקה". www.bgu.ac.il (in Hebrew). Retrieved 2025-04-16.
  9. ^ "עוברים". www.haaretz.co.il (in Hebrew). Retrieved 2025-04-17.
  10. ^ "Prof. Ramy Brustein, Ph.D." Ludwig-Maximilians-Universität München. Retrieved 2025-05-04.
  11. ^ a b Brustein, Ram; Steinhardt, Paul J. (1993-03-25). "Challenges for superstring cosmology". Physics Letters B. 302 (2): 196–201. arXiv:hep-th/9212049. Bibcode:1993PhLB..302..196B. doi:10.1016/0370-2693(93)90384-T. ISSN 0370-2693.
  12. ^ a b Brustein, R.; Gasperini, M.; Giovannini, M.; Veneziano, G. (1995-11-02). "Relic gravitational waves from string cosmology". Physics Letters B. 361 (1): 45–51. arXiv:hep-th/9507017. Bibcode:1995PhLB..361...45B. doi:10.1016/0370-2693(95)01128-D. ISSN 0370-2693.
  13. ^ a b Brustein, Ram; Medved, A.j.m. (2017). "Black holes as collapsed polymers". Fortschritte der Physik. 65 (1): 1600114. arXiv:1602.07706. Bibcode:2017ForPh..6500114B. doi:10.1002/prop.201600114. ISSN 1521-3978.
  14. ^ Brustein, R.; Veneziano, G. (2000-06-19). "Causal Entropy Bound for a Spacelike Region". Physical Review Letters. 84 (25): 5695–5698. arXiv:hep-th/9912055. Bibcode:2000PhRvL..84.5695B. doi:10.1103/PhysRevLett.84.5695. PMID 10991034.
  15. ^ Brustein, Ram; Medved, A. J. M. (2024-11-05). "Frozen stars: Black hole mimickers sourced by a string fluid". Physical Review D. 110 (10): 104004. arXiv:2404.15985. Bibcode:2024PhRvD.110j4004B. doi:10.1103/PhysRevD.110.104004.
  16. ^ "MSN". www.msn.com. Retrieved 2025-03-18.
  17. ^ "Princeton University Gravity Initiative Seminar Series - Events | Institute for Advanced Study". www.ias.edu. 2023-09-22. Retrieved 2025-04-16.
[edit]