Altinoluk, TolgaArmesto Pérez, NéstorBeauf, GuillaumeKovner, AlexLublinsky, Michael2020-04-142020-04-142015Altinoluk, T., Armesto, N., Beuf, G., Kovner, A. and Lublinsky, M., 2015. Bose enhancement and the ridge. Physics Letters B, 751, 448-4520370-2693http://hdl.handle.net/10347/21368We point out that Bose enhancement in a hadronic wave function generically leads to correlations between produced particles. We show explicitly, by calculating the projectile density matrix in the Color Glass Condensate approach to high-energy hadronic collisions, that the Bose enhancement of gluons in the projectile leads to azimuthal collimation of long range rapidity correlations of the produced particles, the so-called ridge correlationseng©2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)http://creativecommons.org/licenses/by/4.0/journal article10.1016/j.physletb.2015.10.0721873-2445open access