Cosmological Constraints on the Sign-Changeable Interactions

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cosmological constraints on Neutrino - Dark Matter interactions

I summarize the results of a recent analysis where the cosmological effects of interactions of neutrinos with cold Dark Matter (DM) is investigated. This interaction produces diffusion-damped oscillations in the matter power spectrum, analogous to the acoustic oscillations in the baryon-photon fluid. I discuss the bounds from the Sloan Digital Sky Survey on the corresponding opacity defined as ...

متن کامل

Cosmological Constraints on Unparticles

We study the cosmological constraints on unparticle interactions and the temperature of the Universe for an unparticle sector with dimensional transmutation scale ΛU > ∼ 1 TeV. By considering thermal background quark decay to unparticles via a scalar operator of dimension dU , we show that the condition that the Universe is not dominated by unparticles at nucleosynthesis imposes a lower bound o...

متن کامل

Constraints on cosmological parameters

A cosmological model with total density close to critical (and flat geometry), dominated by dark matter and dark energy of unknown nature, and consistent with the basic predictions of the inflationary scenario is a very good fit to a variety of cosmological probes: the anisotropy of the CMB, the large scale distribution of matter, the luminosity distance of high-redshift type Ia supernovae and ...

متن کامل

Cosmological constraints on quintessential halos

A complex scalar field has recently been suggested to bind galaxies and flatten the rotation curves of spirals. Its cosmological behavior is thoroughly investigated here. Such a field is shown to be a potential candidate for the cosmological dark matter that fills up a fraction VCDM;0.3 of the Universe ~where CDM denotes cold dark matter!. However, problems arise when the limits from galactic d...

متن کامل

Cosmological constraints on MFV SUSY

We study cosmological constraints in the context of R-parity violating MFV SUSY and find it is driven to tan(β) ≈ 1. These constraints are from two sources: first from the requirement that baryon number violation not undo baryogenesis and second that the flux of decay products from gravitino dark matter not exceed that observed by experiments such as PAMELA and Fermi LAT. The latter discussion ...

متن کامل

ذخیره 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: Communications in Theoretical Physics

سال: 2011

ISSN: 0253-6102

DOI: 10.1088/0253-6102/56/5/29