PIRSA:12050052 Scientific Series Condensed Matter

DOI10.48660/12050052

Series: Quantum Matter

Baskaran, G. (2012). Emergent Gauge Fields and their Condensation in Quantum Spin Liquids. Perimeter Institute. https://pirsa.org/12050052

Baskaran, Ganapathy. Emergent Gauge Fields and their Condensation in Quantum Spin Liquids. Perimeter Institute, May. 11, 2012, https://pirsa.org/12050052 

@misc{ pirsa_PIRSA:12050052,
  doi = {10.48660/12050052},
  url = {https://pirsa.org/12050052},
  author = {Baskaran, Ganapathy},
  keywords = {Condensed Matter},
  language = {en},
  title = {Emergent Gauge Fields and their Condensation in Quantum Spin Liquids},
  publisher = {Perimeter Institute},
  year = {2012},
  month = {may},
  note = {PIRSA:12050052 see, \url{https://pirsa.org}}
}

Abstract

Large quantum fluctuations in certain quantum spin systems destroy long range magnetic order such as antiferromagnetism. Resulting paramagnetic states are called a quantum spin liquids. These states support emergent gauge fields [1]. Under certain conditions, emergent gauge fields condense in the ground state, leading to a chiral spin liquid state [2]. A condensed `magnetic field' for example, correspond to presence of spontaneous circulating spin current or spin `chirality'[3]. In the light of recent search for spin liquids in frustrated quantum antiferromagnets, we revive our earlier approach and show that a variety of chiral spin liquid states are possible in 2D lattices.   [1] G. Baskaran and P.W. Anderson, Phys. Rev., B 37, 580 (1988) [2] V. Kalmeyer and R. B. Laughlin, Phys. Rev. Lett., 59, 2095 (1987) [3] X.-G. Wen, F. Wilczek and A. Zee, Phys. Rev., B 39, 11413 (1989) [4] G Baskaran, Phys. Rev. Lett., 63, 2524 (1989)

Resources

Next talk

Related Talks