Publications (10)
Topological Blocking in Quantum Quench Dynamics
G. Kells, D. Sen, J. K. Slingerland +1
We study the non-equilibrium dynamics of quenching through a quantum critical point in topological systems, focusing on one of their defining features: ground state degeneracies an…
A Study of Circadian Rhythm and Meteorological Factors Influencing Acute Myocardial Infarction
A. M. Selvam, D. Sen, S. M. S. Mody
The circadian rhythm in the occurrence of acute myocardial infarction (AMI) was assessed in three hundred and twenty three patients admitted with AMI during the two-year period Jun…
On nonmeasurable subgroups in generalized measurable structures
S. Basu, D. Sen
In this paper, we prove a result on nonmeasurable subgroups in commutative Polish groups with respect to more generalized structures than sigma-finite measures.
Dynamical scaling and isotope effect in temporal evolution of mesoscopic structure during hydration of cement
S. Mazumder, D. Sen, R. Loidl +1
The evolution of mesoscopic structure for cement-water mixtures turning into colloidal gels remains far from being understood. Recent neutron scattering investigations (Phys. Rev.…
Magnetotransport of Dirac Fermions on the surface of a topological insulator
S. Mondal, D. Sen, K. Sengupta +1
We study the properties of Dirac fermions on the surface of a topological insulator in the presence of crossed electric and magnetic fields. We provide an exact solution to this pr…
Spin polarized STM spectra of Dirac Fermions on the surface of a topological insulator
K. Saha, Sourin Das, K. Sengupta +1
We provide a theory for the tunneling conductance of Dirac Fermions on the surface of a topological insulator as measured by a spin-polarized scanning tunneling microscope t…
Self-Organized Criticality in Daily Incidence of Acute Myocardial Infarction
A. M. Selvam, D. Sen, S. M. S. Mody
Continuous periodogram power spectral analysis of daily incidence of acute myocardial infarction (AMI) reported at a leading hospital for cardiology in Pune, India for the two-year…
DMRG Studies of the Spin-Half Heisenberg System with Dimerization and Frustration
R. Chitra, Swapan K. Pati, H. R. Krishnamurthy +2
Using the density matrix renormalization group technique, we study the ground state phase diagram and other low-energy properties of an isotropic antiferromagnetic spin-half chain…
Tuning the conductance of Dirac fermions on the surface of a topological insulator
S. Mondal, D. Sen, K. Sengupta +1
We study the transport properties of the Dirac fermions with Fermi velocity on the surface of a topological insulator across a ferromagnetic strip providing an exchange field…
Spin wave analysis of Heisenberg magnets in restricted geometries
N. B. Ivanov, D. Sen
In the last decade it has been proven that the standard spin wave theory was able to provide accurate zero-temperature results for a number of low-dimensional Heisenberg spin syste…