We present a systematic analysis of the polarised and unpolarised processes e e ! e + e X in the deep inelastic limit and study the e ects of target photon mass (virtuality) on the photon structure functions. The e ect of target photon virtuality manifests as new singly polarised structure functions and also alters the physical interpretation of the unpolarised structure functions. The physical...

A T-dual version of the Gimon-Polchinski orientifold can be described by a configuration of intersecting Dirichlet seven branes and orientifold seven planes in the classical limit. We study modification of this background due to quantum corrections. It is shown that non-perturbative effects split each orientifold plane into a pair of nearly parallel seven branes. Furthermore, a pair of intersec...

Recent investigation by Verlinde and Verlinde has shown that the fermionic string loop amplitudes change by a total derivative term in the moduli space under a change of basis of the supermoduli. This ambiguity is addressed in the context of the heterotic string theory, and shown to be a consequence of an inherent ambiguity in defining integration over the variables of a Grassmann algebra-in th...

The vision of our Founder, Dr. Homi Bhabha extended much beyond making India globally secure in terms of energy production by harnessing nuclear power. He also emphasized the development of nonpower applications of nuclear energy and radioisotopes for industry, agriculture and healthcare and building strong directed as well as futuristic-based research programmes. This has been reflected in an ...

We analyze M-theory compactified on (K3 × S)/Z2 where the Z2 changes the sign of the three form gauge field, acts on S as a parity transformation and on K3 as an involution with eight fixed points preserving SU(2) holonomy. At a generic point in the moduli space the resulting theory has as its low energy limit N = 1 supergravity theory in six dimensions with eight vector, nine tensor and twenty...

This paper explores the characteristics and relationships of marginality in informal space and plotlander housing in the context of Homi K. Bhabha’s cultural hybridity and Third Space. To illustrate and examine the processes of marginalisation that defined informal space in the UK this paper will critically analyse the previously undocumented plotlander community at Studd Hill on the North Kent...

Ganesh Khandu Narwane 1,∗, José A. Galindo 2,†, Shankara Narayanan Krishna 3,†, David Benavides 4,†, Jean-Vivien Millo 5,† and S. Ramesh 6,† 1 Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400042, India 2 Inria Rennes—Bretagne Atlantique, Campus de Beaulieu, 263 Av. Général Leclerc, Rennes 35042, France; [email protected] 3 Indian Institute of Technology Bombay, Powai, Mumbai 400076,...

We study some aspects of the strong coupling dynamics of Dirichlet six branes, antisix branes, and orientifold planes by using the equivalence of type IIA string theory and M-theory on S. In particular we show that in the strong coupling limit there exists stable configuration of brane and anti-brane at arbitrary separation. The mass of the open string stretched between the brane and the anti-b...