Multioverlap Simulations of the 3D Edwards-Anderson Ising Spin Glass

Journal Article · Fri May 01 04:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.4771· OSTI ID:604455

Berg, B A ^[1]; Berg, B A ^[2]; Janke, W ^[3]

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1. Department of Physics, The Florida State University, Tallahassee, Florida 32306 (United States)
2. Supercomputer Computations Research Institute, Tallahassee, Florida 32306 (United States)
3. Institut fuer Physik, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany)

We introduce a novel method for numerical spin glass investigations: Simulations of two replica at fixed temperature, weighted to achieve a broad distribution of the Parisi overlap parameter q (multioverlap). We demonstrate the feasibility of the approach by studying the 3D Edwards-Anderson Ising (J{sub ik}={plus_minus}1) spin glass in the broken phase ({beta}=1). This makes it possible to obtain reliable results about spin glass tunneling barriers. In addition, our results indicate a nontrivial scaling behavior of the canonical q distributions not only at the freezing point but also deep in the broken phase. {copyright} {ital 1998} {ital The American Physical Society}

• DOE Contract Number: FG05-87ER40319
• OSTI ID: 604455
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FREE ENERGY
FREEZING
ISING MODEL
MAGNETIC MATERIALS
SIMULATION
SPIN GLASS STATE
TUNNELING