%0 Conference Paper
%A Cicoli, M.
%T Axion-like Particles from String Compactifications
%N DESY-PROC-2013-04
%C Hamburg
%I Verlag Deutsches Elektronen-Synchrotron
%M PUBDB-2018-02820
%M DESY-PROC-2013-04
%@ 978-3-935702-83-6 
%B DESY-PROC
%P 235-242
%D 2013
%< Cicoli, M. "Axion-like Particles from String Compactifications" in Proceedings, 9th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2013) / Oberlack, Uwe, Sissol, Pierre (eds.), 2013 ; AXION-WIMP 2013 : 9th Patras Workshop on Axions, WIMPs and WISPs , 2013-06-23 - 2013-06-28, Mainz
%X We review how axion-like particles (ALPs) naturally emerge in the low-energy effective field theory of string compactifications. We focus on the study of their mass spectrum and couplings, stressing that they depend on the mechanism used to fix the moduli. We present concrete examples where either open or closed string modes behave as QCD axions which do not overproduce cold dark matter. Relativistic ALPs can also be produced by the decay of the lightest modulus which drives reheating. These ALPs contribute to dark radiation and could be detected via axion-photon conversion in astrophysical magnetic fields. 
%B 9th Patras Workshop on Axions, WIMPs and WISPs
%C 24 Jun 2013 - 28 Jun 2013, Mainz (Germany)
Y2 24 Jun 2013 - 28 Jun 2013
M2 Mainz, Germany
%K Hypothetisches Teilchen (gnd)
%F PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 ReportContribution to a conference proceedingsContribution to a book
%R 10.3204/DESY-PROC-2013-04/cicoli_michele
%U https://bib-pubdb1.desy.de/record/408367