Pandharipande, V. R.
Overview
Works:  12 works in 13 publications in 1 language and 35 library holdings 

Genres:  Academic theses 
Roles:  Author 
Publication Timeline
.
Most widely held works by
V. R Pandharipande
Lectures on the microscopic theory of nuclear structure by
Vincent Gillet(
Book
)
2 editions published in 1970 in English and held by 32 WorldCat member libraries worldwide
2 editions published in 1970 in English and held by 32 WorldCat member libraries worldwide
Physics of high density and nuclear matter by
V. R Pandharipande(
Book
)
1 edition published in 1973 in English and held by 1 WorldCat member library worldwide
1 edition published in 1973 in English and held by 1 WorldCat member library worldwide
Variational studies of nucleon matter with realistic potentials by Arya Akmal(
)
1 edition published in 1998 in English and held by 1 WorldCat member library worldwide
We study cold, symmetric nuclear matter and pure neutron matter at densities up to six times nuclear saturation density, with realistic interactions fitted to nucleonnucleon scattering data, using variational methods and correlated wave functions. The expectation value of the nuclear Hamiltonian is expanded in terms of cluster contributions, and resummed via chain summation methods. Included in the calculation are a number of new, momentumdependent cluster diagrams, which make significant contributions to the energy. These include relativistic boost corrections, heretofore neglected in studies of infinite matter. The boost corrections, partially mocked up by the threenucleon interaction in previous studies, must be treated explicitly to obtain accurate predictions of the energy of matter at densities above saturation. We find that matter exhibits structure on the femtometer scale at saturation density, and undergoes a phase transition at about twice saturation density. The new phase is marked by a significant increase in the length of tensor correlations. The nature of the transition is further elucidated using the spinisospin structure function, which points to longrange order in the new phase. We argue that this new phase contains a neutral pion condensate, as evidenced by enhancement of the pionic interactions and the pion field. In addition to symmetric nuclear and pure neutron matter, we present an equation of state for betastable matter, used to predict properties of spherical, nonrotating neutron stars by integrating the relativistic equation governing gravitational equilibrium. The interaction models presented here, with relativistic boost corrections, predict the existence of neutron stars with masses up to 2.0 to 2.2 solar masses. We also investigate the possibility of a deconfined quark phase in neuron star cores, and argue that such a phase, should it be present, will have only a small effect on the predictions of maximum masses
1 edition published in 1998 in English and held by 1 WorldCat member library worldwide
We study cold, symmetric nuclear matter and pure neutron matter at densities up to six times nuclear saturation density, with realistic interactions fitted to nucleonnucleon scattering data, using variational methods and correlated wave functions. The expectation value of the nuclear Hamiltonian is expanded in terms of cluster contributions, and resummed via chain summation methods. Included in the calculation are a number of new, momentumdependent cluster diagrams, which make significant contributions to the energy. These include relativistic boost corrections, heretofore neglected in studies of infinite matter. The boost corrections, partially mocked up by the threenucleon interaction in previous studies, must be treated explicitly to obtain accurate predictions of the energy of matter at densities above saturation. We find that matter exhibits structure on the femtometer scale at saturation density, and undergoes a phase transition at about twice saturation density. The new phase is marked by a significant increase in the length of tensor correlations. The nature of the transition is further elucidated using the spinisospin structure function, which points to longrange order in the new phase. We argue that this new phase contains a neutral pion condensate, as evidenced by enhancement of the pionic interactions and the pion field. In addition to symmetric nuclear and pure neutron matter, we present an equation of state for betastable matter, used to predict properties of spherical, nonrotating neutron stars by integrating the relativistic equation governing gravitational equilibrium. The interaction models presented here, with relativistic boost corrections, predict the existence of neutron stars with masses up to 2.0 to 2.2 solar masses. We also investigate the possibility of a deconfined quark phase in neuron star cores, and argue that such a phase, should it be present, will have only a small effect on the predictions of maximum masses
Relativistic Hamiltonians and short range structure of nuclei by Jun L Forest(
)
1 edition published in 1998 in English and held by 1 WorldCat member library worldwide
This work is divided into two parts. In the first part, shortrange structure of deuteron is studied using a nonrelativistic Hamiltonian. The equidensity surfaces for spin projection $M\sb{s}$ = 0 distributions are found to be toroidal in shape, while those of $M\sb{s}$ = $\pm$1 have dumbbell shapes at large density. The toroidal shapes indicate that the tensor correlations have near maximal strength at the interparticle distance $r < 2$ fm. They provide new insights and simple explanations of the structure and electromagnetic form factors of the deuteron. In the second part, relativistic effects are studied using a relativistic Hamilionian defined as the sum of relativistic onebody kinetic energy, two and threebody potentials and their boost corrections. Variational Monte Carlo method is used to study two kinds of relativistic effects in the binding energy of $\sp3$H and $\sp4$He. The first is due to the nonlocalities in the relativistic kinetic energy and relativistic onepion exchange potential (OPEP) and the second is from boost interaction. The OPEP contribution is reduced by $\sim$15% by the relativistic nonlocality, which may also have significant effects on pion exchange currents. However, almost all of this reduction is canceled by changes in the kinetic energy and other interaction terms, and the total effect of the nonlocalities on the binding energy is very small. The boost interactions, on the other hand, give repulsive contributions of $\sim$0.4 (1.9) MeV in $\sp3$H ($\sp4$He) and account for $\sim$1/3 of the phenomenological part of the threenucleon interaction needed in the nonrelativistic Hamiltonians
1 edition published in 1998 in English and held by 1 WorldCat member library worldwide
This work is divided into two parts. In the first part, shortrange structure of deuteron is studied using a nonrelativistic Hamiltonian. The equidensity surfaces for spin projection $M\sb{s}$ = 0 distributions are found to be toroidal in shape, while those of $M\sb{s}$ = $\pm$1 have dumbbell shapes at large density. The toroidal shapes indicate that the tensor correlations have near maximal strength at the interparticle distance $r < 2$ fm. They provide new insights and simple explanations of the structure and electromagnetic form factors of the deuteron. In the second part, relativistic effects are studied using a relativistic Hamilionian defined as the sum of relativistic onebody kinetic energy, two and threebody potentials and their boost corrections. Variational Monte Carlo method is used to study two kinds of relativistic effects in the binding energy of $\sp3$H and $\sp4$He. The first is due to the nonlocalities in the relativistic kinetic energy and relativistic onepion exchange potential (OPEP) and the second is from boost interaction. The OPEP contribution is reduced by $\sim$15% by the relativistic nonlocality, which may also have significant effects on pion exchange currents. However, almost all of this reduction is canceled by changes in the kinetic energy and other interaction terms, and the total effect of the nonlocalities on the binding energy is very small. The boost interactions, on the other hand, give repulsive contributions of $\sim$0.4 (1.9) MeV in $\sp3$H ($\sp4$He) and account for $\sim$1/3 of the phenomenological part of the threenucleon interaction needed in the nonrelativistic Hamiltonians
Femtometer toroidal structure in nuclei, 1996 by J. L Forest(
)
1 edition published in 1996 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1996 in English and held by 0 WorldCat member libraries worldwide
Singleparticle orbitals in liquid helium drops by D. S Lewart(
Book
)
1 edition published in 1987 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1987 in English and held by 0 WorldCat member libraries worldwide
Correlated basis theoryu of nuclear ;matter response functions by
S Fantoni(
Book
)
1 edition published in 1986 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1986 in English and held by 0 WorldCat member libraries worldwide
Euclidian responses of ⁴He at momentum transfer by
Omar Benhar(
)
1 edition published in 1995 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1995 in English and held by 0 WorldCat member libraries worldwide
Quantum Monte Carlo Calucations Of Three And SixQuark States by Mark Wayne Paris(
)
1 edition published in 2001 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 2001 in English and held by 0 WorldCat member libraries worldwide
DECAY OF MESONS IN FLUXTUBE QUARK MODEL by S KUMANO(
Book
)
in English and held by 0 WorldCat member libraries worldwide
in English and held by 0 WorldCat member libraries worldwide
ORTHOGONALIZATION OF CORRELATED STATES by
V. R Pandharipande(
Book
)
in English and held by 0 WorldCat member libraries worldwide
in English and held by 0 WorldCat member libraries worldwide
Classicla simulations of heavyion collisions by R. J LENK(
Book
)
in English and held by 0 WorldCat member libraries worldwide
in English and held by 0 WorldCat member libraries worldwide
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Related Identities
 Radhakant, S.
 Gillet, Vincent Author
 Akmal, Arya Author
 Tata Institute of Fundamental Research
 Forest, Jun L. Author
 Wiringa, R. B.
 Paris, Mark Wayne Author
 SCHLAGEL, T. J.
 Forest, J. L. Author
 Pieper, S. C.
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Alternative Names
Vijay Pandharipande
Vijay Pandharipande Indiaas natuurkundige (19402006)
Vijay Pandharipande indischUSamerikanischer Physiker
Vijay Raghunath Pandharipande amerikansk fysiker
Vijay Raghunath Pandharipande físic estatunidenc
Vijay Raghunath Pandharipande físico estadounidense
Vijay Raghunath Pandharipande physicien américain
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