Are domain walls ruled out?
نویسندگان
چکیده
منابع مشابه
Are Compact Hyperbolic Models Observationally Ruled Out ?
We revisit the observational constraints on compact(closed) hyperbolic(CH) models from cosmic microwave background(CMB). We carry out Bayesian analyses for CH models with volume comparable to the cube of the present curvature radius using the COBE-DMR data and show that a slight suppression in the large-angle temperature correlations owing to the non-trivial topology explains rather naturally t...
متن کاملAre four neutrino models ruled out ?
We show explicitly that four neutrino models of the 2+2 variety still provide an acceptable global fit to the solar, atmospheric and LSND neutrino data. The goodness of fit, defined in the usual way, is found to be 0.26 for the simplest such model. That is, we find that there is a 26% probability of obtaining a worse global fit to the neutrino data We also make some specific comments on the pap...
متن کاملRuled out ? ⋆
A four generation supersymmetric model is proposed, in which the Tevatron “top-quark” events are reinterpreted as the production of t′ which decays dominantly to bW. In this model, mt ≃ mW , and t → t̃χ̃01, with t̃ → cχ̃01. This decay chain, which rarely produces a hard isolated lepton, would have been missed in all previous top quark searches. A narrow region of the model parameter space exists wh...
متن کاملWhy Two-Temperature Accretion Flows Are Not Yet Ruled Out
Binney (2003) recently argued that two-temperature radiatively inefficient accretion flows are impossible because the equipartition between ions and electrons is established on a time scale shorter than the accretion time. Here we correct the Hamiltonian approach of Binney (2003) to include the fact that in the Hamiltonian treatment of electromagnetic interactions canonical and particle angular...
متن کاملCan pulmonary hypertension and increased pulmonary vascular resistance be ruled in and ruled out by echocardiography?
BACKGROUND Several treatment options are available for pulmonary vascular disease, and more patients are considered for right heart catheterization. The aims of this study were to evaluate the diagnostic ability of echocardiography to detect pulmonary hypertension and increased pulmonary vascular resistance (PVR). METHODS This retrospective study comprised 118 patients investigated within 48 ...
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: Astroparticle Physics
سال: 2004
ISSN: 0927-6505
DOI: 10.1016/j.astropartphys.2004.02.006