Work

Unified Description of Nambu-Goldstone Bosons without Lorentz Invariance

Year: 2012

Type: article

Abstract: Using the effective Lagrangian approach, we clarify general issues about Nambu-Goldstone bosons without Lorentz invariance. We show how to count their number and study their dispersion relations. Their number is less than the number of broken generators when some of them form canonically conjugate pairs. The pairing occurs when the generators have a nonzero expectation value of their commutator. For non-semi-simple algebras, central extensions are possible. The underlying geometry of the coset space in general is partially symplectic.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.108.251602

Authors: Haruki Watanabe, Hitoshi Murayama

Institutions: The University of Tokyo, University of California, Berkeley, Lawrence Berkeley National Laboratory, Kavli Institute for the Physics and Mathematics of the Universe

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green