Zero mode contribution in quarkonium correlators and in-medium properties of heavy quarks (2008)
Datta, Saumen, Petreczky, Peter
We calculate the low energy contribution to quarkonium correlators in Euclidean time in lattice QCD. This contribution was found to give the dominant source of the temperature dependence of the...
Hydrogen-Bond Lengths in Polypeptide Helices: No Evidence for Short Hydrogen Bonds (2004)
Aravinda, Subrayashastry, Datta, Saumen, Shamala, Narayanaswamy, Balaram, Padmanabhan
The $3_1_0$ helix and \alpha helix are closely related secondary structures observed in polypeptides. The $3_1_0$ helix is characterized by successive $4\rightarrow1$ $(C_1_0)$ hydrogen bonds...
Charmonia at finite momenta in a deconfined plasma (2004)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wissel, Soenke, Wetzorke, Ines
Lattice studies of charmonium systems have indicated that in a deconfined gluonic plasma ground state charmonia survive as bound states upto temperatures \~ 2 Tc. After surveying the methodologies...
Charmonium systems after the deconfinement transition (2004)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wetzorke, Ines
The behavior of charmonia after the deconfinement transition is investigated on quenched lattices. Analysis of temporal correlators on fine lattices at temperatures upto 3 T_c show that the J/psi and...
Datta, Saumen, Rathore, RNS, Vijayalakshmi, S, Vasudev, Prema G, Rao, Balaji R, Balaram, P, ...
A pentapeptide, $Boc-Leu-Ac_8c-Ala-Leu-Ac_8c-OMe 1$, an octapeptide, $Boc-Leu-Ac_8c-Ala-Leu-Ac_8c-Ala-Leu-Ac_8c-OMe 2$ and a tripeptide, $Boc-Aib-Ac_8c-Aib-OMe 3$ containing the...
Hydrogen-Bond Lengths in Polypeptide Helices: No Evidence for Short Hydrogen Bonds (2004)
Aravinda, Subrayashastry, Datta, Saumen, Shamala, Narayanaswamy, Balaram, Padmanabhan
The $3_1_0$ helix and \alpha helix are closely related secondary structures observed in polypeptides. The $3_1_0$ helix is characterized by successive $4\rightarrow1$ $(C_1_0)$ hydrogen bonds...
Datta, Saumen, Rathore, RNS, Vijayalakshmi, S, Vasudev, Prema G, Rao, Balaji R, Balaram, P, ...
A pentapeptide, $Boc-Leu-Ac_8c-Ala-Leu-Ac_8c-OMe 1$, an octapeptide, $Boc-Leu-Ac_8c-Ala-Leu-Ac_8c-Ala-Leu-Ac_8c-OMe 2$ and a tripeptide, $Boc-Aib-Ac_8c-Aib-OMe 3$ containing the...
Behavior of Charmonium Systems after Deconfinement (2003)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wetzorke, Ines
We present a study of charmonia in hot gluonic plasma, for temperatures upto three times the deconfinement transition temperature Tc. q \bar{q} systems with quark masses close to the charm mass and...
The QCD spectrum with three quark avors (2002)
Claude Bernard, Tom Burch, Kostas Orginos, Thomas A. Degrand, Carleton Detar, Saumen Datta, ...
We present results from a lattice hadron spectrum calculation using three avors of dynamical quarks | two light and one strange, and quenched simulations for comparison. These simulations were done...
A Study of Charmonium Systems across the Deconfinement Transition (2002)
Datta, Saumen, Karsch, Frithjof, Petreczky, Peter, Wetzorke, Ines
We present results from lattice studies of charmonium systems near the deconfinement transition temperature. On quenched isotropic lattices with lattice spacings between 0.02 and 0.05 fm, bar{q} q...
Does the QCD plasma contain propagating gluons? (2002)
Datta, Saumen, Gupta, Sourendu
Comparison of two appropriately chosen screening masses of colour singlet operators in the pure glue QCD plasma indicates that at sufficiently high temperature it contains a weakly-interacting...
Lattice Results for the Decay Constant of Heavy-Light Vector Mesons (2001)
Claude Bernard, Peter Williams, Saumen Datta, Steven Gottlieb, Thomas A. Degrand, Carleton Detar, ...
We compute the leptonic decay constant of heavy-light vector mesons in the quenched approximation. The reliability of lattice computations for heavy quarks is checked by comparing the ratio of the...
The QCD spectrum with three quark flavors (2001)
Claude Bernard, Tom Burch, Kostas Orginos, Thomas A. Degrand, Carleton Detar, Saumen Datta, ...
We present results from a lattice hadron spectrum calculation using three flavors of dynamical quarks --- two light and one strange, and quenched simulations for comparison. These simulations were...
The QCD spectrum with three quark flavors (2001)
Bernard, Claude, Burch, Tom, DeGrand, Thomas A., Datta, Saumen, DeTar, Carleton, Gottlieb, Steven, ...
We present results from a lattice hadron spectrum calculation using three flavors of dynamical quarks - two light and one strange, and quenched simulations for comparison. These simulations were done...
Z2 Monopoles, Vortices, and the Deconfinement Transition in Mixed Action SU(2) Gauge Theory (1999)
Adding separate chemical potentials lambda and gamma for Z2 monopoles and vortices respectively in the Villain form of the mixed fundamental-adjoint action for the SU(2) lattice gauge theory, we...
Impact of Z_2 monopoles and vortices on the deconfinement transition (1999)
The impact of Z_2-monopoles and vortices on the bulk and the deconfinement phase transitions of the SU(2) lattice gauge theory with a mixed Villain form of action is investigated by varying their...
Datta, Saumen, Uma, Manjappara V, Shamala, N, Balaram, P
The Schellman motif is a widely observed helix terminating structural motif in proteins, which is generated when the C-terminus residue adopts a left-handed helical (aL) conformation. The resulting...
Screening Masses in SU(2) Pure Gauge Theory (1999)
Datta, Saumen, Gupta, Sourendu
We perform a systematic scaling study of screening masses in pure gauge SU(2) theory at temperatures above the phase transition temperature. The major finite volume effect is seen to be spatial...
The Deconfinement Transition in SO(3) Gauge Theory (1999)
The SO(3) lattice gauge theory with a Villain form of action was investigated by Monte Carlo techniques on asymmetric lattices with Nt = 2 and 4, where Nt is the number of sites in the temporal...
Datta, Saumen, Uma, Manjappara V, Shamala, N, Balaram, P
The Schellman motif is a widely observed helix terminating structural motif in proteins, which is generated when the C-terminus residue adopts a left-handed helical (aL) conformation. The resulting...
Dimensional Reduction in High Temperature Gauge Theories (1998)
Datta, Saumen, Gupta, Sourendu
Screening masses in the equilibrium thermodynamics of gauge theories were measured. The spectroscopy of these screening masses gives strong evidence for dimensional reduction at $T\ge2T_c$. A...
Dimensional Reduction and Screening Masses in Pure Gauge Theories at Finite Temperature (1998)
Datta, Saumen, Gupta, Sourendu
We studied screening masses in the equilibrium thermodynamics of SU(2) and SU(3) pure gauge theories on the lattice. At a temperature of 2 Tc we found strong evidence for dimensional reduction in the...
This paper is being withdrawn as its main results are already included in section 2 of the paper hep-lat/9901006.
Datta, Saumen, Shamala, N, Banerjee, Arindam, Pramanik, Animesh, Bhattacharjya, Surajit, Balaram, P
The Schellman motif is a widely observed, helix terminating structural motif in proteins, which is achieved by the adoption of a left-handed helical (alphaL) conformation by a C-terminus residue. The...
Phase Transitions in SO(3) Lattice Gauge Theory (1997)
Datta, Saumen, Gavai, Rajiv V.
The phase diagram of SO(3) lattice gauge theory is investigated by Monte Carlo techniques on both symmetric and asymmetric lattices with a view (i) to understanding the relationship between the bulk...
Phase Diagram of SO(3) Lattice Gauge Theory at Finite Temperature (1997)
Datta, Saumen, Gavai, Rajiv V.
The phase diagram of SO(3) lattice gauge theory at finite temperature is investigated by Monte Carlo techniques with a view i) to understand the relationship between the deconfinement phase...
Datta, Saumen, Shamala, N, Banerjee, Arindam, Balaram, P
The crystal structure of an acyclic pentapeptide, Boc-Gly-Gly-Leu-Aib-Val-OMe, reveals an extended conformation for the Gly-Gly segment, in contrast to the helical conformation determined earlier in...
Datta, Saumen, Shamala, N, Banerjee, Arindam, Pramanik, Animesh, Bhattacharjya, Surajit, Balaram, P
The Schellman motif is a widely observed, helix terminating structural motif in proteins, which is achieved by the adoption of a left-handed helical (alphaL) conformation by a C-terminus residue. The...
Datta, Saumen, Kaul, Ramesh, Rao, Balaji R, Shamala, N, Balaram, P
As part of a program to develop synthetic helix–linker–helix peptides the conformational properties of various linking segments are currently being investigated. The propensity of alpha,...
Datta, Saumen, Shamala, N, Banerjee, Arindam, Balaram, P
The crystal structure of an acyclic pentapeptide, Boc-Gly-Gly-Leu-Aib-Val-OMe, reveals an extended conformation for the Gly-Gly segment, in contrast to the helical conformation determined earlier in...
Datta, Saumen, Kaul, Ramesh, Rao, Balaji R, Shamala, N, Balaram, P
As part of a program to develop synthetic helix–linker–helix peptides the conformational properties of various linking segments are currently being investigated. The propensity of alpha,...
Datta, Saumen, Gavai, Rajiv V.
Using improved mean field and strong coupling expansions we re-analyse the bulk phase diagram of the fundamental-adjoint action of the SU(2) Lattice Gauge Theory. We find that the qualitative...
Collinear Divergences at One-loop Order for External Particles in a Heat-bath (1996)
Datta, Saumen, Gupta, Sourendu, Ravindran, V.
In hard interactions between external particles incident on a heat-bath, we show that large logarithms are generated when a radiated or absorbed gauge boson is collinear with the initial fermion...
Datta, Saumen, Mori, Youichi, Takagi, Kazuyoshi, Kawaguchi, Katsunori, Chen, Zhi-Wei, Okajima, Toshihide, ...
The crystal structure of the heterotrimeric quinohemoprotein amine dehydrogenase from Paracoccus denitrificans has been determined at 2.05-Å resolution. Within an 82-residue subunit is contained an...
Datta, Saumen, Mori, Youichi, Takagi, Kazuyoshi, Kawaguchi, Katsunori, Chen, Zhi-Wei, Okajima, Toshihide, ...
The crystal structure of the heterotrimeric quinohemoprotein amine dehydrogenase from Paracoccus denitrificans has been determined at 2.05-Å resolution. Within an 82-residue subunit is contained an...