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In this work we attempt to confront the orthodox widespread claim present in the foundational literature of Quantum Mechanics (QM) according to which 'superpositions are never actually observed in the lab'. In order to do so, we begin by…

History and Philosophy of Physics · Physics 2020-07-03 Christian de Ronde

Present results and future measurements of solar neutrinos are discussed. The results to date indicate that solar electron neutrinos are changing to other active types and that transitions solely to sterile neutrinos are disfavored. The…

High Energy Physics - Experiment · Physics 2014-11-17 A. B. McDonald

Tests, independent of any solar model, can be made of whether solar neutrino experiments are consistent with the minimal Standard Model (stable, massless neutrinos). If the experimental uncertainties are correctly estimated and the sun is…

Nuclear Theory · Physics 2014-11-18 Karsten M. Heeger , R. G. H. Robertson

Nuclear reaction rates are a fundamental yet uncertain ingredient in stellar evolution models. The astrophysical S-factor pertaining to the initial reaction in the proton-proton chain is uncertain at the 1% level, which contributes a…

Solar and Stellar Astrophysics · Physics 2022-10-05 Earl Patrick Bellinger , Jørgen Christensen-Dalsgaard

Solar model predictions of 8B and p-p neutrinos agree with the experimentally-determined fluxes (including oscillations): phi(pp)_{measured} = (1.02 +- 0.02 +- 0.01)phi(pp)_{theory}, and phi(8B)_{measured} =(0.88 +- .04 +-…

Astrophysics · Physics 2016-08-30 John N. Bahcall , M. H. Pinsonneault

Stellar nucleosynthesis is an important nuclear physics phenomenon that is responsible for presently observed chemical elements and isotope abundances. It is also one of the corner stone hypotheses that provides basis for our understanding…

Solar and Stellar Astrophysics · Physics 2012-03-09 Boris Pritychenko

The quantum theory of measurement has been a matter of debate for over eighty years. Most of the discussion has focused on theoretical issues with the consequence that operational prescriptions, which are integral to experimental physics,…

History and Philosophy of Physics · Physics 2013-09-04 Stephen Boughn , Marcel Reginatto

High levels of deuterium fractionation of $\rm N_2H^+$ (i.e., $\rm D_{frac}^{N_2H^+} \gtrsim 0.1$) are often observed in pre-stellar cores (PSCs) and detection of $\rm N_2D^+$ is a promising method to identify elusive massive PSCs. However,…

Astrophysics of Galaxies · Physics 2021-01-13 Chia-Jung Hsu , Jonathan C. Tan , Matthew D. Goodson , Paola Caselli , Bastian Körtgen , Yu Cheng

Purcell effect predicts that spontaneous radiation is not an intrinsic property of matter, but is affected by the environment in which it is located, and is the result of the interaction of matter and field. Purcell effect can be inferred…

Nuclear Theory · Physics 2021-04-08 Fei He , Ka-Di Zhu

Even if never elucidated, the question of determinism is a standing question along the history of human thinking. A physical system evolves in a deterministic way if its future is completely determined once we have fixed some present…

Quantum Physics · Physics 2010-06-30 Ramon Lapiedra , Francisco Montes

Deuterium is created during Big Bang Nucleosynthesis, and, in contrast to the other light stable nuclei, can only be destroyed thereafter by fusion in stellar interiors. In this paper we study the cosmic evolution of the deuterium abundance…

Astrophysics of Galaxies · Physics 2016-03-09 Irina Dvorkin , Elisabeth Vangioni , Joseph Silk , Patrick Petitjean , Keith A. Olive

We observe photons and neutrinos from stars. Based on these observations, complemented by measurements of cosmic rays energies and composition, we have been able to constrain several models for the Big Bang and for stellar evolution. But…

Nuclear Theory · Physics 2011-10-13 C. A. Bertulani

Measurements are ordinarily described with respect to absolute "Newtonian" time. In reality however, the switching-on of the measuring device at the instance of the measurement requires a timing device. Hence the classical time $t$ must be…

Quantum Physics · Physics 2009-10-31 Aharon Casher , Benni Reznik

The details of the Solar system's formation are still heavily debated. Questions remain about the formation locations of the giant planets, and the degree to which volatile material was mixed throughout the proto-planetary system. One…

Earth and Planetary Astrophysics · Physics 2013-02-20 Lucyna Kedziora-Chudczer , Jeremy Bailey , Jonathan Horner

The solar neutrino flux arrives at Earth as an incoherent admixture of mass eigenstates, and then solar neutrino detection constitute a blind probe to the oscillation pattern of the neutrino flavour conversion. Consequently, it is also…

High Energy Physics - Phenomenology · Physics 2020-03-18 Pedro Cunha de Holanda

Matter density uncertainties can affect the measurements of the neutrino oscillation parameters at future neutrino factory experiments, such as the measurements of the mixing parameters $\theta_{13}$ and $\deltacp$. We compare different…

High Energy Physics - Phenomenology · Physics 2014-11-17 Tommy Ohlsson , Walter Winter

Dedicated experiments searching for lepton flavour violation can be performed very sensitively using K-decays and $\mu$-decays as well as neutrinoless double $\beta$-decay and muonium to antimuonium conversion. Although there is no…

High Energy Physics - Experiment · Physics 2016-08-31 Klaus P. Jungmann

In above mentioned article [1] assumptions of possible systematic errors of our experiment on measuring of the neutron lifetime [2] have been made. In the given comment we are obliged to explain, that assumptions made in [1] are erroneous.…

Nuclear Experiment · Physics 2010-01-20 A. Serebrov , A. Fomin , V. Varlamov

In order to relate the probabilistic predictions of quantum theory uniquely to measurement results, one has to conceive of an ensemble of identically prepared copies of the quantum system under study. Since the universe is the total domain…

Quantum Physics · Physics 2007-05-23 Helmut Fink , Hajo Leschke

It is argued that the conventional formulation of quantum mechanics is inadequate: the usual interpretation of the mathematical formalism in terms of the results of measurements cannot be applied to situations in which discontinuous…

Quantum Physics · Physics 2007-05-23 Anthony Sudbery