Solar energy paper index
On operator product expansion in the spin-orbit coupled bosonic system
One-line summary
A solar energy research paper on On operator product expansion in the spin-orbit coupled bosonic system.
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Chinese explanation / 中文解读
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Original abstract
Ultra-cold bosonic systems can be tuned to exhibit quantum phase transitions. For example, the Rabi-coupled bosonic system exhibits ferromagnetic and paramagnetic phases, whereas the spin-orbit-coupled system exhibits exciting phases such as supersolidity. The physics of these phases and phase transitions is very rich. It is an important topic of research to probe these phases and phase transitions using various tools in many-body physics. The operator product expansion (OPE) provides one such tool. It expresses the product of two separated operators as a series expansion of local operators. In this article, we will derive the OPE of two operators $ψ^\dagger_σ(\vec r)$ and $ψ_{σ'}(\vec r')$. More specifically, we look for the contact density term, which controls many of the universal physics of the underlying bosonic system.
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