SO(5) Superconductors in a Zeeman Magnetic Field
Jiang-Ping Hu, Shou-Cheng Zhang
TL;DR
This paper demonstrates that SO(5) models subjected to a Zeeman magnetic field can exhibit an exact SU(2) x U(1) symmetry, providing a method to test SO(5) symmetry across different doping levels.
Contribution
It reveals a new symmetry property of SO(5) models in magnetic fields, enabling experimental testing of SO(5) symmetry at various doping levels.
Findings
SO(5) models can have an exact SU(2) x U(1) symmetry under a Zeeman magnetic field
The symmetry change can be used to test SO(5) symmetry in experiments
The principle applies across different doping levels.
Abstract
The generic symmetry of a system under a uniform Zeeman magnetic field is U(1) x U(1). However, we show that SO(5) models in the presence of a finite chemical potential and a finite Zeeman magnetic field can have a exact SU(2) x U(1) symmetry. This principle can be used to test SO(5) symmetry at any doping level.
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Taxonomy
TopicsAdvanced NMR Techniques and Applications · Physics of Superconductivity and Magnetism · Advanced Chemical Physics Studies