Bridging Lattice-Scale Physics and Continuum Field Theory with Quantum Monte Carlo Simulations

  title={Bridging Lattice-Scale Physics and Continuum Field Theory with Quantum Monte Carlo Simulations},
  author={Ribhu K. Kaul and Roger G. Melko and Anders W. Sandvik},
  journal={Annual Review of Condensed Matter Physics},
We discuss designer Hamiltonians—lattice models tailored to be free from sign problems (“de-signed”) when simulated with quantum Monte Carlo (QMC) methods but which still host complex many-body states and quantum phase transitions of interest in condensed matter physics. We focus on quantum spin systems in which competing interactions lead to nonmagnetic ground states. These states and the associated quantum phase transitions can be studied in great detail, enabling direct access to universal… Expand
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  • Physics, Medicine
  • Physical review letters
  • 2010
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