62 citations · 283 across the 16 of their papers we have counts for
16 papers
Moving-Boundary Port-Hamiltonian Systems
T. J. Meijer, A. Das, S. Weiland
In this paper, we consider linear boundary port-Hamiltonian distributed parameter systems on a time-varying spatial domain. We derive the specific time-varying Dirac structure that…
Topological Structure of the Vacuum, Cosmological Constant and Dark Energy
B. G. Sidharth, A. Das, C. R. Das +2
In this review we present a theory of cosmological constant and Dark Energy (DE), based on the topological structure of the vacuum. The Multiple Point Principle (MPP) is reviewed.…
Discrete phase space - III: The Divergence-free S-matrix elements
A. Das
In the arena of the discrete phase space and continuous time, the theory of S-marix is formulated. In the special case of Quantum-Electrodynamics (QED), the Feynman rules are preci…
Discrete phase space - II: The second quantization of free relativistic wave fields
A. Das
The Klein-Gordon equation, the Maxwell equation, and the Dirac equation are presented as partial difference equations in the eight-dimensional covariant discrete phase space. These…
Discrete phase space - I: Variational formalism for classical relativistic wave fields
A. Das
The classical relativistic wave equations are presented as partial difference equations in the arena of covariant discrete phase space. These equations are also expressed as differ…
General Solutions of Cosmological Equations with Inequalities for Perfect Fluid and Scalar Field
A. Das, N. Tariq, R. M. W. Woodside
Spherically symmetric cosmological equations in the usual FLRW coordinates are explored, with different sources. The first couples a perfect fluid with a quintessence scalar field…