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Assuming the best numerical value for the cosmic baryonic density and the existence of three neutrino flavors, standard big bang nucleosynthesis is a parameter-free model. It is important to assess if the observed primordial abundances can…

宇宙学与河外天体物理 · 物理学 2020-10-07 Christian Iliadis , Alain Coc

Nuclear astrophysics is a multi-disciplinary field with a huge demand for nuclear data. Among its various fields, stellar evolution and nucleosynthesis are clearly the most closely related to nuclear physics. The need for nuclear data for…

核理论 · 物理学 2022-12-06 S. Goriely , A. Choplin , W. Ryssens , I. Kullmann

Quantum mechanics makes the otherwise stable vacua of a theory metastable through the nucleation of bubbles of the new vacuum. This in turn causes a first order phase transition. These cosmological phase transitions may have played an…

广义相对论与量子宇宙学 · 物理学 2023-04-19 Ali Masoumi , Ken D. Olum , Jeremy M. Wachter

Kinetics of the first order phase transition has been investigated. The case when the droplets sizes have a limit value is considered. An analytical theory for such process has been constructed and all main characteristics of the process…

统计力学 · 物理学 2007-05-23 V. Kurasov

Quantum computing has the potential to revolutionize multiple fields by solving complex problems that can not be solved in reasonable time with current classical computers. Nevertheless, the development of quantum computers is still in its…

The standard theory of nuclear fusion rates in a strongly interacting plasma can be (correctly) derived only when the energy release, Q, is large compared to other energies in the problem. We exhibit a result for rates that provides a basis…

太阳与恒星天体物理 · 物理学 2010-05-25 R. F. Sawyer

In this work a phenomenological stochastic differential equation is proposed to model the time evolution of the radius of a pre-critical molecular cluster during nucleation (the classical order parameter). Such a stochastic differential…

化学物理 · 物理学 2013-10-25 Miguel A. Durán-Olivencia , Fermín Otálora

Clinical trials are pivotal in the drug discovery process to determine the safety and efficacy of a drug candidate. The high failure rates of these trials are attributed to deficiencies in clinical model development and protocol design.…

Nucleation in systems with a metastable liquid-gas critical point is the prototypical example of a two-step nucleation process, in which the appearance of the critical nucleus is preceded by the formation of a liquid-like density…

软凝聚态物质 · 物理学 2023-04-07 Camilla Beneduce , Diogo E. P. Pinto , Petr Sulc , Francesco Sciortino , John Russo

Nucleation, commonly associated with discontinuous transformations between metastable and stable phases, is crucial in fields as diverse as atmospheric science and nanoscale electronics. Traditionally, it is considered a microscopic process…

Our understanding of the physics of biological molecules, such as proteins and DNA, is limited because the approximations we usually apply to model inert materials are not in general applicable to soft, chemically inhomogeneous systems. The…

量子物理 · 物理学 2010-07-13 Sarah Harris , Vivien M. Kendon

While there are various approaches to benchmark physical processors, recent findings have focused on computational phase transitions. This is due to several factors. Importantly, the hardest instances appear to be well-concentrated in a…

量子物理 · 物理学 2021-04-08 Hariphan Philathong , Vishwa Akshay , Ksenia Samburskaya , Jacob Biamonte

The r-process involves neutron-rich nuclei far off stability for which no experimental cross sections are known. Therefore, one has to rely on theory. The difficulties in the predictions are briefly addressed. To investigate the impact of…

天体物理学 · 物理学 2015-06-24 T. Rauscher

Recent observations of the growth of protein crystals have identified two different growth regimes. At low supersaturation, the surface of the crystal is smooth and increasing in size due to the nucleation of steps at defects and the…

软凝聚态物质 · 物理学 2015-05-14 James F. Lutsko , Vasileios Basios , Gregoire Nicolis , John J. Kozak , Mike Sleutel , Dominique Maes

In rapid neutron capture, or r-process, nucleosynthesis, heavy elements are built up via a sequence of neutron captures and beta decays that involves thousands of nuclei far from stability. Though we understand the basics of how the…

核理论 · 物理学 2015-06-17 R. Surman , M. Mumpower , J. Cass , I. Bentley , A. Aprahamian , G. C. McLaughlin

Nuclear astrophysics simulations aiming to study the origin of the elements in stars require a multitude of nuclear physics input. Both systematic model dependent and statistically correlated uncertainties need to be considered. An…

太阳与恒星天体物理 · 物理学 2013-10-18 M. G. Bertolli , F. Herwig , M. Pignatari , T. Kawano

Numerical simulation of quantum systems is crucial to further our understanding of natural phenomena. Many systems of key interest and importance, in areas such as superconducting materials and quantum chemistry, are thought to be described…

量子物理 · 物理学 2010-11-17 Katherine L Brown , William J Munro , Vivien M Kendon

Simulations are widely used to study nucleation in first order phase transitions due to the fact that they have access to the relevant length and time scales. However, simulations face the problem that nucleation is an activated process.…

软凝聚态物质 · 物理学 2020-03-06 Pablo Rosales-Pelaez , Ignacio Sanchez-Burgos , Chantal Valeriani , Carlos Vega , Eduardo Sanz

We argue that the complex numbers are an irreducible object of quantum probability. This can be seen in the measurements of geometric phases that have no classical probabilistic analogue. Having complex phases as primitive ingredient…

广义相对论与量子宇宙学 · 物理学 2014-11-17 Charis Anastopoulos

Parallel and series nucleation are the basic elements of the complex nucleation process when two saddle points exist on the free-energy landscape. It is pointed out that the nucleation rates follow formulas similar to those of parallel and…

材料科学 · 物理学 2015-06-03 Masao Iwamatsu
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