Tejinder Pal Singh's Home Page
Affiliation | Research | CV | Publications | Students | Awards | Teaching | Popular Science | Schooling
- Affiliation:
- Department of Astronomy and Astrophysics
- Tata Institute of Fundamental Research
- Homi Bhabha Road
- Mumbai 400005
- India
- Designation : Professor
- Email : tpsingh at tifr.res.in
- Tel: 0091-22-22782600 (Office): 0091-22-22804935 (Residence)
- Research Interests :
- Quantum Gravity and Quantum Measurement
- Cosmology : the Origin of Dark Energy
- General Relativity : Classical and Quantum aspects of Gravitational Collapse
- In Brief :
- The concept of time is a classical concept, external to quantum mechanics. There ought to exist a reformulation of quantum mechanics which does not referto an external classical time. Such a reformulation can be shown to be the limiting case of a nonlinear quantum theory, with the nonlinearity becoming important at the Planck mass/energy scale. The nonlinearity can possibly explain the collapse of the wave-function during a quantum measurement, andpredicts a finite superposition lifetime for superposed states of mesoscopic quantum systems. These ideas could be tested by ongoing laboratoryexperiments in the near future. [Ref. arXiv:0711.3773]
- We do not understand what is causing the Universe to undergo an accelerated expansion today. The simplest explanation, namely that this is an apparenteffect resulting from averaging of inhomogeneities, does not seem to work [Paranjape and Singh, Phys. Rev. Lett. 101, 181101 (2008)]. Could theacceleration be an apparent effect because we live in a huge void? Could it be due to a very tiny cosmological constant, whose extremely small but non- zero value can be derived from quantum gravity?
- Classical general relativity seems to admit the formation of naked singularities. What are the possible astrophysical signatures of such naked singularities, if any?
- CV:
- Date of Birth : 23rd July, 1962
- Masters in Physics [Five Year Integrated Programme] : IIT, Delhi (1984)
- Ph. D. in Physics : TIFR, Mumbai (1989)
- Post-Doctoral Fellow at ICTP, Trieste : 1989-90
- Faculty Member at TIFR since 1989
- List of Publications :
- Link to Spires Database
- Graduate Student(s):
- Kinjalk Lochan
- Priti Mishra
- Past Graduate Students :
- Aseem Paranjape
- Rakesh Tibrewala
- Sashideep Gutti
- Sukratu Barve
- Awards and Recognition :
- CBSE HSC Examination (1977) : All-India Rank 11
- CBSE Senior Secondary Examination [1979] : All-India Rank 3
- IIT Delhi Silver Medal [1984]
- Gravity Research Foundation [USA] Essay Contest :
- 3rd Prize (1998)
- 4th Prize (2004) [jointly with Cenalo Vaz, Cincinnati]
- 2nd Prize (2008)
- Center for Excellence Visiting Scholar, Yukawa Institute for Theoretical Physics, Kyoto [Aug.-Oct. 2000]
- Fourth Prize in 2009 Essay Contest of the Foundational Questions Institute (USA)
- Teaching [Graduate Courses at TIFR]:
- Classical Electrodynamics [1993]
- Astronomy and Astrophysics [1995]
- Classical Electrodynamics [1998]
- Statistical Mechanics [2001]
- Classical Mechanics [2003]
- Statistical Mechanics [2009]
- Some Popular Science Articles :
- Special Relativity for the School-Going Child
- Quantum theory and the Cosmological Constant
- Quantum theory, gravity, and the standard model of particle physics
- Schooling :
- Kendriya Vidyalaya No. 1, Ambala Cantonment, 1975-79
- Kendriya Vidyalaya, BHU Varanasi, 1974-75
- Kendriya Vidayala, Babina Cantonment, 1973-74
- Shalini Preparatory School, Clement Town, Dehradun, 1969-72