Udit Raha

Department of Physics and Astronomy,
Klingelbergstrasse-82
CH-4056 Basel, Switzerland
Tel: +41-61-2673754
Fax: +41-61-2671349
e-mail: udit.raha@unibas.ch
Personal Data
Date & Place Of Birth: 27 October, 1977, Kolkata (Calcutta), India.
Nationality: Indian Citizen.
 
Employment and Education
Date & Place Of Birth: Post Doctoral Research Associate in Theoretical Nuclear Physics.
Present Employer/Host: Prof. Dr. D. Trautmann.
Ph.D Advisor: Prof. Dr. Ulf.-G. Meißner.
Educational background:
  • Ph.D (Dr. rer. nat.) with a Magna cumlaude distinction, from the University of Bonn, Germany, in 2006.
  • First Class in MS (Physics) from the Indian Institute of Science (IISc), Bangalore, India, in 2002.
  • First class in B.Sc (Physics Honours) from the University of Calcutta, India, in 1999.
Research Interests: Perturbative and non-perturbative QCD, Physics of Hadrons, Chiral Perturbation Theory, Effective Field Theories, NRQCD.
Dissertations
  • Ph.D thesis - Hadronic Atoms in Effective Field Theory. Advisor - Prof. Dr. Ulf.-G. Meißner.
  • Master’s thesis - Analysis of Baryons using Infrared Regularization in Chiral Perturbation Theory.
    Advisor - Prof. Dr. B. Ananthanarayan.
    • Statement of general research interests:
    I did my Ph.D on the various applications of low-energy Effective Field Theory (EFT) to hadronic bound state systems. Apart from strengthening my present analytical skills acquired over the past few years of doing Ph.D, I would definitely like to diversify my research fields by working with various challenging problems. One of such areas in which I would definitely want to work is the physics of exclusive processes at intermediete energies where there exists a strong interplay between perturbative and non-perturbative aspects of QCD. These serve as ideal testing grounds for studying the transition from the low-energy non-pertubative to perturbative physics. Another related topic of my interest is the physics of heavy quarks and flavour physics. Here, there are lots of very interesting, and at the same time puzzling issues within and beyond the Standard Model description of physics. These are of profound importance in astrophysical phenomena in the context of CP violation, lepton number violation and baryogenesis, where some of the deepest mysteries of the universe are left to be unraveled. These constitute some of the most active fields of research today, both theoretical and experimental and much remains left to be learnt from them. I strongly believe that my present experience with QCD (especially, Non-relativistic QCD) and the various analytical techniques of EFT would help me implement them in the further understanding of such topics.
    The other areas of theoretical physics which I would be equally interested to work in future and inherently based on low-energy EFT techniques are:
    • Using ChPT and effective lagrangian techniques to study various hadronic processes at low energies,
    • Nuclear and Many-body physics in chiral effective field theories,
    • Hot and dense matter nuclear- and astro-physics,
    • Effective Field Theories in the context of Lattice QCD
    to widen the perspective of my scientific interests.
    Publications
    • Spectrum and decays of Kaonic hydrogen

      • U.-G. Meißner, U. Raha and A. Rusetsky, Eur. Phys. J. C 35 (2004) 349. [arXiv : hep − ph/0402261]
    • Determination of the πN scattering lengths from the experiments on Pionic deuterium

      • U.-G. Meißner, U. Raha and A. Rusetsky, Eur. Phys. J. C 41 (2005) 213; Eur. Phys. J. C 45 (2006) 545. [arXiv : nucl − ph/0501073]
    • Isospin-breaking corrections in the pion-deuteron scattering length

      • U.-G. Meißner, U. Raha and A. Rusetsky, Phys. Lett. B 639 (2006) 478. [arXiv : nucl − th/0512035]
    • Kaon-nucleon scattering lengths from the DEAR/SIDDHARTA experiment

      • U.-G. Meißner, U. Raha and A. Rusetsky, Eur. Phys. J. C 47 (2006) 473. [arXiv : nucl − th/0603029]