EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY

AMBJORN J, BIALAS P, JURKIEWICZ J, BURDA Z, Petersson B (1994)
PHYSICS LETTERS B 325(3-4): 337-346.

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Abstract
We propose a new, very efficient algorithm for sampling of random surfaces in the Monte Carlo simulations, based on so-called baby universe surgery, i.e. cutting and pasting of baby universes. It drastically reduces slowing down as compared to the standard local flip algorithm, thereby allowing simulations of large random surfaces coupled to matter fields. As an example we investigate the efficiency of the algorithm for 2d simplicial gravity interacting with a one-component free scalar field. The radius of gyration is the slowest mode in the standard local flip/shift algorithm. The use of baby universe surgery decreases the autocorrelation time by three order of magnitude for a random surface of 0.5 . 10(5) triangles, where it is found to be tau(int) = 150 +/- 31 sweeps.
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AMBJORN J, BIALAS P, JURKIEWICZ J, BURDA Z, Petersson B. EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY. PHYSICS LETTERS B. 1994;325(3-4):337-346.
AMBJORN, J., BIALAS, P., JURKIEWICZ, J., BURDA, Z., & Petersson, B. (1994). EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY. PHYSICS LETTERS B, 325(3-4), 337-346.
AMBJORN, J., BIALAS, P., JURKIEWICZ, J., BURDA, Z., and Petersson, B. (1994). EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY. PHYSICS LETTERS B 325, 337-346.
AMBJORN, J., et al., 1994. EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY. PHYSICS LETTERS B, 325(3-4), p 337-346.
J. AMBJORN, et al., “EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY”, PHYSICS LETTERS B, vol. 325, 1994, pp. 337-346.
AMBJORN, J., BIALAS, P., JURKIEWICZ, J., BURDA, Z., Petersson, B.: EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY. PHYSICS LETTERS B. 325, 337-346 (1994).
AMBJORN, J, BIALAS, P, JURKIEWICZ, J, BURDA, Z, and Petersson, Bengt. “EFFECTIVE SAMPLING OF RANDOM SURFACES BY BABY UNIVERSE SURGERY”. PHYSICS LETTERS B 325.3-4 (1994): 337-346.
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