Finite-size scaling of vector and axial current correlators

Damgaard PH, Hernandez P, Jansen K, Laine M, Lellouch L (2003)
Nuclear Physics B 656(1-2): 226-238.

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Abstract
Using quenched chiral perturbation theory, we compute the long-distance behaviour of two-point functions of flavour non-singlet axial and vector currents in a finite volume, for small quark masses, and at a fixed gauge-field topology. We also present the corresponding predictions for the unquenched theory at fixed topology. These results can in principle be used to measure the low-energy constants of the chiral Lagrangian, from lattice simulations in volumes much smaller than one pion Compton wavelength. We show that quenching has a dramatic effect on the vector correlator, which is argued to vanish to all orders, while the axial correlator appears to be a robust observable only moderately sensitive to quenching. (C) 2003 Elsevier Science B.V. All rights reserved.
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Damgaard PH, Hernandez P, Jansen K, Laine M, Lellouch L. Finite-size scaling of vector and axial current correlators. Nuclear Physics B. 2003;656(1-2):226-238.
Damgaard, P. H., Hernandez, P., Jansen, K., Laine, M., & Lellouch, L. (2003). Finite-size scaling of vector and axial current correlators. Nuclear Physics B, 656(1-2), 226-238.
Damgaard, P. H., Hernandez, P., Jansen, K., Laine, M., and Lellouch, L. (2003). Finite-size scaling of vector and axial current correlators. Nuclear Physics B 656, 226-238.
Damgaard, P.H., et al., 2003. Finite-size scaling of vector and axial current correlators. Nuclear Physics B, 656(1-2), p 226-238.
P.H. Damgaard, et al., “Finite-size scaling of vector and axial current correlators”, Nuclear Physics B, vol. 656, 2003, pp. 226-238.
Damgaard, P.H., Hernandez, P., Jansen, K., Laine, M., Lellouch, L.: Finite-size scaling of vector and axial current correlators. Nuclear Physics B. 656, 226-238 (2003).
Damgaard, PH, Hernandez, P, Jansen, K, Laine, Mikko, and Lellouch, L. “Finite-size scaling of vector and axial current correlators”. Nuclear Physics B 656.1-2 (2003): 226-238.
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