Results 81 to 90 of about 127,263 (262)

Coherence, Transport, and Chaos in 1D Bose–Hubbard Model: Disorder vs. Stark Potential

open access: yesFortschritte der Physik, EarlyView.
Quantum coherence and criticality in finite Bose–Hubbard chains are investigated using exact diagonalization. Thermal fluctuations, Stark potential, and disorder reshape coherence, visibility, and superfluid response. Finite‐size systems show signatures of quantum criticality, with disorder suppressing global superfluidity but preserving local ...
Asad Ali   +8 more
wiley   +1 more source

The origins of nuclear astrophysics at Caltech [PDF]

open access: yes, 1983
Shortly before the start of World War II, several theoretical physicists, including Hans Bethe and Carl von Weizsacker, advanced the idea that the sun derives it energy from nuclear reactions within its core. C. C.
Goodstein, Judith R., Greenberg, John L.
core  

And there was light

open access: yes, 2014
I discuss the use of light as a collection of real and virtual photons to study lingering questions in particle and nuclear physics.Comment: 9 pages, 5 figures, 4 tables, Invited Lecture at the Carpathian Summer School of Physics 2014, Exotic Nuclei ...
Bertulani, C. A.
core   +1 more source

Dark Excitonic State Preparation in a Symmetry‐Protected Open Quantum Battery

open access: yesAdvanced Quantum Technologies, EarlyView.
An optical charging protocol is presented for an excitonic quantum battery that prepares the system in a symmetry‐protected dark excited state. Using a continuous‐wave laser followed by controlled relaxation, the system stores energy in a state resilient to environmental losses. Abstract Previous work (J. Phys. Chem.
Zohreh Khodadad   +2 more
wiley   +1 more source

First direct measurement of 12C(12C,n)23Mg at stellar energies

open access: yesEPJ Web of Conferences, 2016
Neutrons produced by the carbon fusion reaction 12C(12C,n)23Mg play an important role in stellar nucleosynthesis. Past studies have shown large discrepancies between experimental data and theory, leading to an uncertain cross section extrapolation at ...
Tang X.D.   +30 more
doaj   +1 more source

Few-body reactions investigated with the Trojan Horse Method

open access: yesSciPost Physics Proceedings, 2020
The Trojan Horse Method is an indirect method to measure reaction cross sections at energies of interest for nuclear astrophysics, exploiting the nuclei clustering properties.
Roberta Spartà, Giuseppe G. Rapisarda, Claudio Spitaleri, M. La Cognata, Rosario G. Pizzone, S. Romano, Aurora Tumino
doaj   +1 more source

Nuclear Astrophysics in Rare Isotope Facilities

open access: yes, 2009
Nuclear reactions in stars are difficult to measure directly in the laboratory at the small astrophysical energies. In recent years indirect methods with rare isotopes have been developed and applied to extract low-energy astrophysical cross sections ...
Alamanos   +42 more
core   +1 more source

Broken Structural Symmetry in Terahertz Detectors: Physical Mechanisms, Device Design, and Recent Advances

open access: yesSmall Structures, EarlyView.
Breaking the structural symmetry of devices is a crucial design strategy that endows terahertz (THz) detectors with novel operating mechanisms and unique characteristics. This study provides an in‐depth discussion on symmetry‐breaking‐induced phenomena, novel asymmetric structures, and dominant detection mechanisms.
Hecheng Han   +8 more
wiley   +1 more source

Ultra-high charge electron acceleration for nuclear applications

open access: yesFundamental Plasma Physics
Ultra-intense laser-plasma wakefield accelerator possess several superior properties compared with the traditional radio-frequency accelerators. These characteristics include femtosecond duration, micro-source size, and ultra-dense beam density, result ...
Liming Chen   +8 more
doaj   +1 more source

Nuclear inputs relevant to nuclear astrophysics, status and perspectives [PDF]

open access: yesEPJ Web of Conferences
Nuclear physics influences are present throughout the Universe at every scale. Over the past decades, significant efforts have been dedicated to various fields related to nucleosynthesis and stellar evolution.
Goriely Stéphane   +3 more
doaj   +1 more source

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