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A Modern Introduction to Quantum Field Theory

- R. Parthasarathy
- Mathematics
- 10 June 2005

This book gives a clear exposition of quantum field theory at the graduate level and the contents could be covered in a two semester course or, with some effort, in a one semester course. The book is… Expand

String theory in curved space-time

- K. S. Viswanathan, R. Parthasarathy
- Physics
- 1 March 1997

Intrinsic and extrinsic geometric properties of string world sheets in a curved space-time background are explored. In our formulation, the only dynamical degrees of freedom of the string are its… Expand

NONLINEAR SIGMA MODEL ON CONIFOLDS

- R. Parthasarathy, K. S. Viswanathan
- Physics
- 21 March 2002

Explicit solutions to the conifold equations with complex dimension n = 3, 4 in terms of complex coordinates (fields) are employed to construct the Ricci-flat Kahler metrics on these manifolds. The… Expand

A q-analogue of the supersymmetric oscillator and its q-superalgebra

- R. Parthasarathy, K. S. Viswanathan
- Physics
- 7 February 1991

A q-analogue of the supersymmetric oscillator is constructed out of q-boson and q-fermion creation and annihilation operators. For a fixed nB+nF=2n, (where nB and nF are q-boson and q-fermion… Expand

SAVVIDY VACUUM IN SU(2) YANG–MILLS THEORY

- D. Kay, Alok Kumar, R. Parthasarathy
- Physics
- 20 July 2005

The one-loop effective energy density of a pure SU(2) Yang–Mills theory in the Savvidy background is reconsidered. The stable and the unstable modes are identified. The stable modes are treated in… Expand

A diagonal representation of the quantum density matrix using q-boson oscillator coherent states

- R. Parthasarathy, R. Sridhar
- Physics, Mathematics
- 16 August 2002

Abstract A q-analogue of Sudarshan's diagonal representation of the quantum mechanical density matrix is obtained using q-boson coherent states. Earlier result of Mehta and Sudarshan on the self… Expand

Supersymmetry in Thermo Field Dynamics

- R. Parthasarathy, R. Sridhar
- Physics
- 21 June 2000

By considering the enlarged thermal system including the heat bath, it is shown that this system has supersymmetry which is not broken at finite temperature. The super algebra is constructed and the… Expand

A Conformal Field Theory of Extrinsic Geometry of 2-d Surfaces

- K. S. Viswanathan, R. Parthasarathy
- Physics
- 1 February 1997

Abstract In the description of the extrinsic geometry of the string world sheet regarded as a conformal immersion of a 2-d surface in R3 it was previously shown that, restricting to surfaces with h √… Expand

Geometric properties of QCD string from Willmore functional

- R. Parthasarathy, K. S. Viswanathan
- Physics, Mathematics
- 29 August 2000

Abstract The extremum of the Willmore-like functional for m -dimensional Riemannian manifold immersed in d -dimensional Riemannian manifold under normal variations is studied and various cases of… Expand

Generalized q-fermion oscillators and q-coherent states

- K. S. Viswanathan, R. Parthasarathy, R. Jagannathan
- Physics
- 7 April 1992

The algebra of q-fermion operators, developed earlier by two of the present authors is re-examined. It is shown that these operators represent particles that are distinct from usual spacetime… Expand

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