Parity effects in the scaling of block entanglement in gapless spin chains.
We consider the Rényi alpha entropies for Luttinger liquids (LL). For large block lengths l, these are known to grow like lnl. We show that there are subleading terms that oscillate with frequency 2k{F} (the Fermi wave number of the LL) and exhibit a universal power-law decay with l. The new critica...
Main Authors: | Calabrese, P, Campostrini, M, Essler, F, Nienhuis, B |
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Format: | Journal article |
Language: | English |
Published: |
2010
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