Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.116403
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Funding
- NSF DMR [0906498]
- Nanosciences Foundation at Grenoble, France
- Swiss NSF
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0906498] Funding Source: National Science Foundation
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We consider the dynamic response functions of interacting one dimensional spin-1/2 fermions at arbitrary momenta. We build a nonperturbative zero-temperature theory of the threshold singularities using mobile impurity Hamiltonians. The interaction induced low-energy spin-charge separation and power-law threshold singularities survive away from Fermi points. We express the threshold exponents in terms of the spinon spectrum.
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