
Ph.D. Physics, Yale University, 5/1971
Postdoctoral Training

Assistant Research Physicist, Departmental Fellow, University of California, Berkeley, 09/01/197108/31/1973
Academic Appointment, Affiliation, and Employment History
Tenure Track Appointments

Professor, University of Southern California, 08/01/1983

Director, CaltechUSC Center for Theoretical Physics, 09/01/199908/01/2003

Associate Professor, Yale University, 07/01/197908/01/1983

Assistant Professor, Yale University, 09/01/197506/01/1979

Assistant Professor, Stanford University, 09/01/197308/31/1975
Visiting and Temporary Appointments

Visiting Professor, Perimeter Institute for Theoretical Physics, 12/01/201005/31/2011

Visiting Professor, Princeton University, 10/01/201011/30/2010

Scientific Associate, CERN Theory Division, Switzerland, 08/01/199608/01/1997

Member, Institute for Advanced Study, Princeton, 01/01/199005/01/1990

Visiting Professor, University of California, Santa Barbara, 08/01/198612/01/1986

Member, Institute for Advanced Study, Princeton, 01/01/198006/01/1980

Visiting Assistant Professor, Harvard University, 09/01/197812/31/1978
PostDoctoral Appointments

Assistant Reserarch Physicist, University of California, Berkeley, 09/01/197108/31/1973
Description of Research
Summary Statement of Research Interests
Professor Bars studies superstring theory and quantum gauge field theory and their application to the Standard Model of elementary particles, the unification of forces, cosmology and black holes. He has made various contributions to the development of the Standard Model of particles and forces, QCD, and unified gauge theories and established a relationship between string theory and twodimensional QCD. He discovered the Moyal star formulation of String Field Theory (MSFT) which provides a more efficient method for investigating nonperturbative aspects of string field theory using noncommutative geometry. He invented TwoTime Physics (2Tphysics) based on a gauge symmetry that makes position and momentum locally indistinguishable from one another and leads to deep consequences. A striking result of 2Tphysics is the unification of diverse onetime physics dynamical systems as holographic images of a single dynamical system that lives in a higher spacetime including one extra space and one extra time dimensions. In 20062008 he established that all the physics we know today, as embodied in the Standard Model of Particles and Forces, and in General Relativity, is described by a gauge fixed version of 2Tphysics field theory in 4 space and 2 time dimensions. In 2011 2Tphysics showed how to complete spacetime beyond cosmological singularities, thus leading to a new scenario for the very early universe: before the big bang the universe was in a phase of contraction and reached a big crunch, then it expanded briefly into an antigravity phase during which gravity behaved like a repulsive force, then it contracted again to a big crunch followed with a big bang thus reaching an expansion phase in which we live now.
Research Keywords
2Tphysics, superstring theory, standard model of elementary particles, unification of forces, cosmology, black holes, supersymmetry
Research Specialties
http://physics1.usc.edu/~bars/
Publications
Book

Bars, I., Terning, J.
(2010).
Extra Dimensions in Space and Time. New York, NY: Springer.

Bars, I.
(2005).
Quantum Mechanics. Quantum Mechanics

Bars, I., Nemeschansky, D., Pilch, K., Saleur, H. M., Warner, N. P.
(1996).
Future Perspectives in String Theory. USA, UK, Singapore: World Scientific.

Bars, I., Chodos, A., Tze, C.
(1985).
Symmetry in Particle Physics. N.Y.: Plenum.
Book Chapter

Bars, I.
(2013).
Traversing Cosmological Singularities, Complete Journeys Through Spacetime Including Antigravity. Beyond the Big Bang Springer. arXiv:1209.1068

Bars, I.
(2006).
Lectures on twistors. (Vol. Vol.2). pp. page 487. Quantum Theory and Symmetries/Heron Press. Lectures on twistors
Cited Research

Bars, I.
(2010).
Super YangMills theory in 10+2 dimensions, The 2Tphysics Source for N=4 SYM and M(atrix) Theory. High Energy Physics archive at Spires. arXiv:1008.4761
Journal Article

Bars, I., Rychkov, D.
(2014).
Is String Interaction the Origin of Quantum Mechanics?. Physics Letters B.

Bars, I., Steinhardt, P., Turok, N.
(2014).
Dynamical string tension in string theory with spacetime Weyl invariance. Fortschritte der Physik.
Vol. 62 (1112), pp. 901920.

Bars, I., Rychkov, D.
(2014).
Background Independent String Field Theory. Physical Review D. arXiv:1407.4699

Bars, I., Steinhardt, P., Turok, N.
(2014).
Local Conformal Symmetry in Physics and Cosmology. Physical Review.
Vol. Phys. Rev. D89, pp. 043515043530. arXiv:1307.1848

Bars, I., Steinhardt, P., Turok, N.
(2013).
Sailing through the big crunchbig bang transition. Physical Review. arXiv:1312.0739

Bars, I., Araya, I.
(2013).
Generalized Dualities in 1TPhysics as Holographic Predictions from 2TPhysics. Physical Review. arXiv:1311.4205

Bars, I., Steinhardt, P., Turok, N.
(2013).
Cyclic Cosmology, Conformal Symmetry and the Metastability of the Higgs. Physics Letters.
Vol. B726, pp. 5055. arXiv:1307.8106

Bars, I., Chen, S., Steinhardt, P., Turok, N.
(2012).
Complete Set of Homogeneous Isotropic Analytic Solutions in ScalarTensor Cosmology with Radiation and Curvature. Physical Review.
Vol. D86, pp. 083542. arXiv:1207.1940

Bars, I., Chen, S., Turok, N., Steinhardt, P.
(2012).
Antigravity and the big crunch/big bang transition. Physics Letters.
Vol. B715, pp. 278281. antigravity

Bars, I., Chen, S.
(2011).
The Big Bang and Inflation United by an Analytic Solution. Physical Review.
Vol. D83, pp. 043522.

Bars, I., Chen, S., Turok, N.
(2011).
Geodesically Complete Analytic Solutions for a Cyclic Universe. Physical Review.
Vol. D84, pp. 083513.

Bars, I.
(2010).
Gauge Symmetry in Phase Space, Consequences for Physics and Spacetime. Int.J.Mod.Phys..
Vol. A25, pp. 52355252.

Bars, I.
(2010).
Constraints on Interacting Scalars in 2T Field Theory and No Scale Models in 1T Field Theory. Physical Review.
Vol. D82, pp. 125025.

Bars, I.
(2009).
Relativistic Harmonic Oscillator Revisited. Physical Review.
Vol. D79, pp. 045009. http://arxiv.org/abs/0810.2075

Bars, I., Chen, S.
(2009).
Geometry and Symmetry Structures in 2T Gravity. Physical Review.
Vol. D79, pp. 085021. http://arxiv.org/abs/0811.2510

Bars, I., Kuo, Y.
(2008).
N=2,4 Supersymmetric Gauge Field Theory in 2Tphysics. Physical Review.
Vol. D79 (2009) 025001 arXiv:0808.0537 [hepth]

Bars, I.
(2008).
Gravity in 2TPhysics. Physical Review.
Vol. D77 (2008) 125027 arXiv:0804.1585 [hepth]

Bars, I., Quelin, G.
(2008).
Dualities among onetime field theories with spin, emerging from a unifying twotime field theory. Physical Review.
Vol. D77 (2008) 125019 arXiv:0802.1947 [hepth]

Bars, I.
(2007).
The standard model as a 2Tphysics theory. American Physical Society/SUSY06/.
Vol. AIP Conf.Proc.903 (2007) 550; hepth/0610187

Bars, I., Kuo, Y.
(2007).
Field theory in 2Tphysics with N = 1 supersymmetry. Physical Review Letters.
Vol. 99 (2007) 041801

Bars, I.
(2006).
The standard model of particles and forces in the framework of 2Tphysics. Physical Review.
Vol. D74 (2006) 085019; hepth/0606045

Bars, I.
(2004).
Twistor superstring in 2Tphysics. Physical Review.
Vol. D70 (2004) 104022; hepth/0407239

Bars, I.
(2001).
Map of Witten's star, To Moyal's star. Physics Letters.
Vol. B517 (2001), pp. 436444. hepth/0106157

Bars, I.
(2001).
Survey of Two Time Physics,. Classical and Quantum Gravity.
Vol. 18 (2001) 3113; hepth/0008164

Bars, I., Deliduman, C., Minic, D.
(1999).
Lifting Mtheory to Two Time Physics. Physics Letters.
Vol. B457 (1999) 275; hepth/9904063
Proceedings

Bars, I.
(2011).
Geodesically Complete Universe. Physics Archives.
Research Report

Bars, I.
(2010).
Hunting for TeV Scale Strings at the LHC. arXiv:1008.2379 [hepph].
Honors and Awards

Fellow (or Equivalent) of National Society in Discipline, Fellow, American Physical Society, 1/1/1988

Residency at the Institute for Advanced Study, Member, 19901991

First Award by Gravity Research Foundation, 1988

NIH/NSF Career Development Award, Department of Energy Outstanding Junior Investigator, 19831984

Residency at the Institute for Advanced Study, Member, 19791980

Sloan Research Fellowship Recipient, 19761980

Fulbright Award, Fellowship, 19641967
Service to the University
Administrative Appointments

Director of the Caltech  USC Center for Theoretical Physics, 09/01/199906/30/2003
Service to the Profession
Committees

Member, Americal Physical Society Committee for the Dannie Heinemann Prize, awarded for Mathematical Physics, 05/01/200712/31/2008
Professional Memberships

American Physical Society, 01/01/1969