Abstract
We study the entropy of entanglement of the ground state in a wide family of one-dimensional quantum spin chains whose interaction is of finite range and translation invariant. Such systems can be thought of as generalizations of the XY model. The chain is divided in two parts: one containing the first consecutive L spins; the second the remaining ones. In this setting the entropy of entanglement is the von Neumann entropy of either part. At the core of our computation is the explicit evaluation of the leading order term as L → ∞ of the determinant of a block-Toeplitz matrix with symbol
where g(z) is the square root of a rational function and g(1/z) = g −1(z). The asymptotics of such determinant is computed in terms of multi-dimensional theta-functions associated to a hyperelliptic curve \({\mathcal{L}}\) of genus g ≥ 1, which enter into the solution of a Riemann-Hilbert problem. Phase transitions for these systems are characterized by the branch points of \({\mathcal{L}}\) approaching the unit circle. In these circumstances the entropy diverges logarithmically. We also recover, as particular cases, the formulae for the entropy discovered by Jin and Korepin [14] for the XX model and Its, Jin and Korepin [12, 13] for the XY model.
Similar content being viewed by others
References
Belokolos E.D., Bobenko A.I., Enolskii V.Z., Its A.R., Matveev V.B.: Algebro-geometric approach to nonlinear integrable equations. Springer series in nonlinear dynamics. Springer-Verlag, Berlin-Heidelberg-New York (1995)
Bennett C.H., Bernstein H.J., Popescu S., Schumacher B.: Concentrating partial entanglement by local operations. Phys. Rev. A 53, 2046–2052 (1996)
Calabrese, P., Cardy, J.: Entanglement entropy and quantum field theory. J. Stat. Mech. The. Exp., P06002 (2004)
Calabrese, P., Cardy, J.: Evolution of entanglement entropy in one-dimensional systems. J. Stat. Mech. The. Exp., P04010 (2005)
Deift P.A.: Integrable operators. Amer. Math. Soc. Transl. (2) 189, 69–84 (1999)
Farkas H.M., Kra I.: Riemann surfaces. Graduate Texts in Mathematics, 71. Springer-Verlag, New York-Berlin (1980)
Rauch H.E., Farkas H.M.: Theta functions with applications to Riemann surfaces. The Williams and Wilkins Co.,, Baltimore, MD (1974)
Fokas A.S., Xin Zhou.: On the solvability of Painlev II and IV. Commun. Math. Phys. 144(3), 601–622 (1992)
Harnad J., Its A.R.: Integrable Fredholm operators and dual isomonodromic deformations. Comm. Math. Phys. 226, 497–530 (2002)
Holzhey C., Larsen F., Wilczek F.: Geometric and renormalized entropy in conformal field theory. Nucl. Phys. B 424, 443–467 (1994)
Its A.R., Izergin A.G., Korepin V.E., Slavnov N.A.: Differential equations for quantum correlation functions. Proceedings of the Conference on Yang-Baxter Equations, Conformal Invariance and Integrability in Statistical Mechanics and Field Theory. Int. J. Mod. Phys. B 4, 1003–1037 (1990)
Its A.R., Jin B.Q., Korepin V.E.: Entanglement in the XY spin chain. J. Phys. A 38, 2975–2990 (2005)
Its, A.R., Jin, B.Q., Korepin, V.E.: Entropy of XY Spin Chain and Block Toeplitz Determinants. In: Filds Inst. Commun. Universality and Renormalization, I. Bender, D. Kneimer (eds.), Vol. 50, Providence, RI: Amer. Math. Soc., 2007, P. 151
Jin B.Q., Korepin V.E.: Entanglement, Toeplitz determinants and Fisher-Hartwig conjecture. J. Stat. Phys. 116, 79–95 (2004)
Korepin V.E.: Universality of entropy scaling in 1D gap-less models. Phys. Rev. Lett. 92, 096402 (2004)
Griffiths P., Harris J.: Principles of Algebraic Geometry. Wiley Interscience, New York (1978)
Lieb E., Schultz T., Mattis D.: Two soluble models of an antiferromagnetic chain. Ann. Phys. 16, 407–466 (1961)
Keating J.P., Mezzadri F.: Random matrix theory and entanglement in quantum spin chains. Commun. Math. Phys. 242, 543–579 (2004)
Keating J.P., Mezzadri F.: Entanglement in quantum spin chains, symmetry classes of random matrices, and conformal field theory. Phys. Rev. Lett. 94, 050501 (2005)
Osterloh A., Amico L., Falci G., Fazio R.: Scaling of entanglement close to a quantum phase transition. Nature 416, 608–610 (2002)
Peschel, I.: On the entanglement entropy for an XY spin chain. J. Stat. Mech. The. Exp., P12005 (2004)
Osborne T.J., Nielsen M.A.: Entanglement in a simple quantum phase transition. Phys. Rev. A 66, 032110 (2002)
Vidal G., Latorre J.I., Rico E., Kitaev A.: Entanglement in quantum critical phenomena. Phys. Rev. Lett. 90, 227902 (2003)
Widom H.: Asymptotic behavior of block Toeplitz matrices and determinants. Adv. Math. 13, 284–322 (1974)
Widom H.: On the limit of block Toeplitz determinants. Proc. Amer. Math. Soc. 50, 167–173 (1975)
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by P. Sarnak
A. R. Its was partially supported by the NSF grants DMS-0401009 and DMS-0701768.
F. Mezzadri and M. Y. Mo acknowledge financial support by the EPSRC grant EP/D505534/1.
Rights and permissions
About this article
Cite this article
Its, A.R., Mezzadri, F. & Mo, M.Y. Entanglement Entropy in Quantum Spin Chains with Finite Range Interaction. Commun. Math. Phys. 284, 117–185 (2008). https://doi.org/10.1007/s00220-008-0566-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00220-008-0566-6