Results 51 to 60 of about 20,829 (241)

Primordial big bang nucleosynthesis and generalized uncertainty principle

European Physical Journal C: Particles and Fields, 2021
The Generalized Uncertainty Principle (GUP) naturally emerges in several quantum gravity models, predicting the existence of a minimal length at Planck scale.
Giuseppe Gaetano Luciano
doaj   +1 more source

How do atomic code uncertainties affect abundance measurements in the intracluster medium?

Astronomische Nachrichten, Volume 341, Issue 2, Page 203-209, February 2020., 2020
Abstract Accurate chemical abundance measurements of X‐ray‐emitting atmospheres pervading massive galaxies, galaxy groups, and clusters provide essential information on the star formation and chemical enrichment histories of these large‐scale structures.
François Mernier, Norbert Werner, Kiran Lakhchaura, Jelle de Plaa, Liyi Gu, Jelle S. Kaastra, Junjie Mao, Aurora Simionescu, Igone Urdampilleta   +8 more
wiley   +1 more source

Underground Nuclear Astrophysics: Present and future of the LUNA experiment [PDF]

EPJ Web of Conferences, 2019
The evolution of celestial bodies is regulated by gravitation and thermonuclear reaction rates, while the Big Bang nucleosynthesis is the result of nuclear processes in a rapidly expanding Universe.
Gustavino Carlo
doaj   +1 more source

A Review of Quintessential Inflation

Galaxies, 2021
Some of the most important quintessential inflation scenarios, such as the Peebles–Vilenkin model, are described in detail. These models are able to explain the early- and late-time accelerated expansions of our universe, and the phase transition from ...
Jaume de Haro, Llibert Aresté Saló
doaj   +1 more source

Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay

Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020
We construct a unified model of inflation and PeV dark matter with an appropriate choice of no‐scale Kähler potential, superpotential, and gauge kinetic function in terms of MSSM fields and hidden sector Polonyi field. The model is consistent with the CMB observations and can explain the PeV neutrino flux observed at IceCube HESE.
Girish Kumar Chakravarty, Najimuddin Khan, Subhendra Mohanty, Ricardo G. Felipe   +3 more
wiley   +1 more source

Guidelines to the THM [PDF]

EPJ Web of Conferences
Guidelines to the use of the indirect Trojan Horse Method to get cross sections of interest for nuclear astrophysics are given, using the example of the d+d reactions of interest for the Big Bang Nucleosynthesis model.
Spartà Roberta
doaj   +1 more source

Primordial Nucleosynthesis: Theory and Observations [PDF]

, 1999
We review the Cosmology and Physics underlying Primordial Nucleosynthesis and survey current observational data in order to compare the predictions of Big Bang Nucleosynthesis with the inferred primordial abundances. From this comparison we report on the
Burles, Burles, Dearborn, Deliyannis, Dicus, Dodelson, Epstein, Fields, Fields, Fields, Fields, Fields, Fiorentini, Fixsen, Fukugita, Galli, Galli, Gary Steigman, Hata, Heckler, Hubble, Izotov, Kawasaki, Keith A Olive, Kolb, Krishnamurthi, Levshakov, Levshakov, Levshakov, Linsky, Lopez, Lopez, Mahaffy, Olive, Olive, Olive, Olive, Olive, Pagel, Penzias, Persic, Reeves, Rood, Sarkar, Scully, Skillman, Smith, Smoot, Songaila, Steigman, Steigman, Steigman, Steigman, Terry P Walker, Thomas, Thorburn, Tosi, Vidal-Madjar, Wagoner, Walker, Webb, Yang, Yang   +62 more
core   +2 more sources

A New Left‐Right Symmetry Model

Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020
We propose a new L‐R symmetry model where the L‐R symmetry transformation reverses both the L‐R chirality and the local quantum number. We add to the model a global quantum number F whose value is one for fermions (minus one for antifermion) and vanishes for bosons.
Apriadi Salim Adam, Akmal Ferdiyan, Mirza Satriawan, Mariana Frank   +3 more
wiley   +1 more source

Gravitational wave and CMB probes of axion kination

Journal of High Energy Physics, 2022
Rotations of an axion field in field space provide a natural origin for an era of kination domination, where the energy density is dominated by the kinetic term of the axion field, preceded by an early era of matter domination.
Raymond T. Co, David Dunsky, Nicolas Fernandez, Akshay Ghalsasi, Lawrence J. Hall, Keisuke Harigaya, Jessie Shelton   +6 more
doaj   +1 more source

Constraining neutrino physics with BBN and CMBR [PDF]

, 2001
We perform a likelihood analysis of the recent results on the anisotropy of Cosmic Microwave Background Radiation from the BOOMERanG and DASI experiments to show that they single out an effective number of neutrinos in good agreement with standard Big ...
Hansen, S. H., Mangano, G., Melchiorri, A., Miele, G., Pisanti, O.   +4 more
core   +2 more sources