%0 Generic %1 davidson2013einstein %A Davidson, Sacha %A Elmer, Martin %D 2013 %K BEC axions %T Bose Einstein condensation of the classical axion field in cosmology? %U http://arxiv.org/abs/1307.8024 %X The axion is a motivated cold dark matter candidate, which it would be interesting to distinguish from weakly interacting massive particles. Sikivie has suggested that axions could behave differently during non-linear galaxy evolution, if they form a bose einstein condensate. Using classical equations of motion during linear structure formation, we explore whether "gravitational thermalisation" can drive axions to a bose einstein condensate. At linear order in G_N, we interpret that the principle activities of gravity are to expand the Universe and grow density fluctuations. From the anisotropic stress, we estimate a short dissipation scale for axions which does not confirm previous estimates of their gravitational thermalisation rate.

@misc{davidson2013einstein, abstract = {The axion is a motivated cold dark matter candidate, which it would be interesting to distinguish from weakly interacting massive particles. Sikivie has suggested that axions could behave differently during non-linear galaxy evolution, if they form a bose einstein condensate. Using classical equations of motion during linear structure formation, we explore whether "gravitational thermalisation" can drive axions to a bose einstein condensate. At linear order in G_N, we interpret that the principle activities of gravity are to expand the Universe and grow density fluctuations. From the anisotropic stress, we estimate a short dissipation scale for axions which does not confirm previous estimates of their gravitational thermalisation rate.}, added-at = {2013-08-28T11:30:18.000+0200}, author = {Davidson, Sacha and Elmer, Martin}, biburl = {https://www.bibsonomy.org/bibtex/29b5e6e0a51ea9ded8ca106e39575119b/dkraljic}, description = {Bose Einstein condensation of the classical axion field in cosmology?}, interhash = {62dcbd181e54f4e831cb7cd150a0e1d7}, intrahash = {9b5e6e0a51ea9ded8ca106e39575119b}, keywords = {BEC axions}, note = {cite arxiv:1307.8024Comment: 12 pages + Appendix, no figures}, timestamp = {2013-08-28T11:30:27.000+0200}, title = {Bose Einstein condensation of the classical axion field in cosmology?}, url = {http://arxiv.org/abs/1307.8024}, year = 2013 }