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GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS

Publication ,  Journal Article
Brower, R; Chandrasekharan, S; Wiese, UJ
Published in: Physica A
1998

We show that cluster algorithms for quantum models have a meaning independent of the basis chosen to construct them. Using this idea, we propose a new method for measuring with little effort a whole class of Green's functions, once a cluster algorithm for the partition function has been constructed. To explain the idea, we consider the quantum XY model and compute its two point Green's function in various ways, showing that all of them are equivalent. We also provide numerical evidence confirming the analytic arguments. Similar techniques are applicable to other models. In particular, in the recently constructed quantum link models, the new technique allows us to construct improved estimators for Wilson loops and may lead to a very precise determination of the glueball spectrum.

Duke Scholars

Published In

Physica A

Publication Date

1998

Volume

261

Start / End Page

520 / 533

Related Subject Headings

  • Fluids & Plasmas
  • 4902 Mathematical physics
  • 4901 Applied mathematics
  • 0206 Quantum Physics
  • 0105 Mathematical Physics
  • 0102 Applied Mathematics
 

Citation

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ICMJE
MLA
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Brower, R., Chandrasekharan, S., & Wiese, U. J. (1998). GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS. Physica A, 261, 520–533.
Brower, R., S. Chandrasekharan, and U. J. Wiese. “GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS.” Physica A 261 (1998): 520–33.
Brower R, Chandrasekharan S, Wiese UJ. GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS. Physica A. 1998;261:520–33.
Brower, R., et al. “GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS.” Physica A, vol. 261, 1998, pp. 520–33.
Brower R, Chandrasekharan S, Wiese UJ. GREEN'S FUNCTIONS FROM QUANTUM CLUSTER ALGORITHMS. Physica A. 1998;261:520–533.

Published In

Physica A

Publication Date

1998

Volume

261

Start / End Page

520 / 533

Related Subject Headings

  • Fluids & Plasmas
  • 4902 Mathematical physics
  • 4901 Applied mathematics
  • 0206 Quantum Physics
  • 0105 Mathematical Physics
  • 0102 Applied Mathematics