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Quasielastic response with a real-time path-integral Monte Carlo method

Carraro, C. and Koonin, S. E. (1990) Quasielastic response with a real-time path-integral Monte Carlo method. Physical Review B, 41 (10). pp. 6741-6750. ISSN 0163-1829. doi:10.1103/PhysRevB.41.6741.

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We formulate the quasielastic response of a nonrelativistic many-body system at zero temperature in terms of ground-state density-matrix elements and real-time path integrals that embody the final-state interactions. While the former provide the weight for a conventional Monte Carlo calculation, the latter require a more sophisticated treatment. We argue that the stationary-phase Monte Carlo technique recently developed by Doll et al. can be used to study the approach to "Y scaling." We perform calculations for a particle in a potential well in one and three dimensions and compare them with the exact results available for these models.

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Additional Information:©1990 The American Physical Society. Received 6 October 1989. This work was supported in part by the National Science Foundation under Grant Nos. PHY88-17296 and PHY86-04197. One of us (S.E>K>) gratefully acknowledges the hospitality of the Massachusetts Institute of Technology (MIT) Center for Theoretical Physics during the initial phase of this work.
Issue or Number:10
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9932
Deposited By: Archive Administrator
Deposited On:27 Mar 2008
Last Modified:08 Nov 2021 21:03

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