منابع مشابه
QCD Axion and Quintessential Axion
The axion solution of the strong CP problem is reviewed together with the other strong CP solutions. We also point out the quintessential axion(quintaxion) whose potential can be extremely flat due to the tiny ratio of the hidden sector quark mass and the intermediate hidden sector scale. The quintaxion candidates are supposed to be the string theory axions, the model independent or the model d...
متن کاملInflating with the QCD Axion
We investigate using the potential for the QCD axion to inflate. In particular, for axion models with a softly broken ZN symmetry, the axion potential has a series of N local minima and may be modeled by a tilted cosine. Chain inflation results along this tilted cosine: a series of tunneling events takes place as the field tunnels its way from an initial minimum near the top of the potential to...
متن کاملString compactification, QCD axion and axion-photon-photon coupling
It is pointed out that there exist a few problems to be overcome toward an observable sub-meV QCD axion in superstring compactification. We give a general expression for the axion decay constant. For a large domain wall number NDW , the axion decay constant can be substantially lowered from a generic value of a scalar singlet VEV. The Yukawa coupling structure in the recent Z12−I model is studi...
متن کاملObservable Seesaw and its Collider Signatures
We discuss the scenario with TeV-scale right-handed neutrinos, which are accessible at future colliders, while holding down tiny seesaw-induced masses and sizable couplings to the standard-model particles. The signal with tri-lepton final states and large missing transverse energy is appropriate for studying collider signatures of the scenario with extra spatial dimensions. We show that the LHC...
متن کاملThe QCD Axion and Moduli Stabilisation
We investigate the conditions for a QCD axion to coexist with stabilised moduli in string compactifications. We show how the simplest approaches to moduli stabilisation give unacceptably large masses to the axions. We observe that solving the F-term equations is insufficient for realistic moduli stabilisation and give a no-go theorem on supersymmetric moduli stabilisation with unfixed axions ap...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2016
ISSN: 1029-8479
DOI: 10.1007/jhep11(2016)052