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We develop a unified framework for understanding the sign of fermion-mediated interactions by exploiting the symmetry classification of Green's functions. In particular, we establish a theorem regarding the sign of… Click to show full abstract
We develop a unified framework for understanding the sign of fermion-mediated interactions by exploiting the symmetry classification of Green's functions. In particular, we establish a theorem regarding the sign of fermion-mediated interactions in systems with chiral symmetry. The strength of the theorem is demonstrated within multiple examples with an emphasis on electron-mediated interactions in materials.
Keywords:
sign fermion;
mediated interactions;
fermion mediated
Journal Title: Physical Review B
Year Published: 2021
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Journal Title: Physical Review B
Year Published: 2021
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!