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BOUNDARY VALUE PROBLEMS FOR THE DIFFUSION EQUATION WITH PIECEWISE CONTINUOUS TIME DELAY

• Joseph M Wiener, Ujjal Debnath

0 41 10 15 v 1 2 N ov 2 00 4 Role of Modified Chaplygin Gas in Accelerated Universe

• Ujjal Debnath, Asit Ranjan Banerjee, Subenoy Chakraborty
• 2008

Recent observations of the luminosity of type Ia supernovae indicate [1, 2] an accelerated expansion of the universe and lead to the search for a new type of matter which violate the strong energy… (More)

Gravitational Collapse in Higher Dimension

• Ujjal Debnath, Subenoy Chakraborty

Spherically symmetric inhomogeneous dust collapse has been studied in higher dimensional space-time and appearance of naked singularity has been analyzed both for non-marginal and marginally bound… (More)

Naked Singularities in Higher Dimensional Gravitational Collapse

• Asit Ranjan Banerjee, Ujjal Debnath, Subenoy Chakraborty
• 2008

Spherically symmetric inhomogeneous dust collapse has been studied in higher dimensional spacetime and the factors responsible for the appearance of a naked singularity are analyzed in the region… (More)

0 30 51 03 v 1 2 8 M ay 2 00 3 A Quintessence Problem in Self-interacting Brans-Dicke Theory

• Subenoy Chakraborty, N. Chakraborty, Ujjal Debnath
• 2008

The Standard Cosmological Model (SCM) can only describe decelerated universe models and so cannot reproduce the results coming from the recent type Ia supernovae observations upto about z ∼ 1 [1]… (More)

Accretions of various types of dark energies onto Morris – Thorne wormhole

• Ujjal Debnath
• 2014

In this work, we have studied the accretion of dark energies onto a Morris–Thorne wormhole. Previously, in ref. (González-Díaz, arXiv:hep-th/0607137), it was shown that for quintessence like dark… (More)

Fe b 20 08 Interaction between scalar field and ideal fluid with inhomogeneous equation of state

• Writambhara Chakraborty, Ujjal Debnath
• 2008

In this letter we study a model of interaction between the scalar field and an inhomogeneous ideal fluid. We have considered two forms of the ideal fluid and a power law expansion for the scale… (More)

0 60 10 49 v 1 1 2 Ja n 20 06 Role of Modified Chaplygin Gas as a Dark Energy Model in Collapsing Spherically Symmetric Cloud

• Ujjal Debnath, Subenoy Chakraborty
• 2008

In this work gravitational collapse of a spherical cloud, consists of both dark matter and dark energy in the form of modified Chaplygin gas is studied. It is found that dark energy alone in the form… (More)

0 21 20 45 v 1 1 1 D ec 2 00 2 Is Cosmic No-Hair Conjecture in Brane Scenarios follows from General Relativity ?

• Subenoy Chakraborty, Ujjal Debnath
• 2002

In this letter we examine the Cosmic No-Hair Conjecture (CNHC) in brane world scenarios. For the validity of this conjecture, in addition to the strong and weak energy conditions for the matter… (More)

0 30 80 37 v 1 1 2 A ug 2 00 3 Role of Initial Data in Higher Dimensional Quasi-Spherical Gravitational Collapse

• Ujjal Debnath, Subenoy Chakraborty
• 2003

X iv :g rqc /0 30 80 37 v1 1 2 A ug 2 00 3 Role of Initial Data in Higher Dimensional Quasi-Spherical Gravitational Collapse Ujjal Debnath and Subenoy Chakraborty Department of Mathematics, Jadavpur… (More)

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