The Micro Physics Of Neutrino Transport At Extreme Density

Production and propagation of neutrinos in hot and dense matter plays an important role in the thermal evolution of neutron stars. In this article we review the micro-physics that influences weak interaction rates in dense matter containing nucleons, leptons and or quarks. We show that these rates depend sensitively on the strong and electromagnetic correlations between baryons. We present new results, obtained using molecular dynamics, for the response of dense plasma of heavy ions. Neutrino rates are also shown to be sensitive to the phase structure of matter at extreme density. We highlight recent calculations of neutrino rates in dense color superconducting phases of quark matter. We present a brief discussion of how these differences may affect the early evolution of a neutron star. Neutrinos play an important role in stellar evolution. By virtue of their weak interactions with matter neutrinos provide a mechanism for energy loss from the dense stellar interiors. In neutron stars, neutrino emission is the dominant cooling mechanism from the their birth in a supernova explosion until several thousand years of subsequent evolution. In this talk, we present an overview of some of the nuclear/particle physics issues that play a role in understanding the rate of propagation and production of neutrinos inside neutron stars. The calculation of these rates are of current interest since several research groups are embarking on large scale numerical simulations of supernova and neutron star evolution. Even moderate changes in the nuclear microphysics associated with the weak interaction rates at high density can impact macroscopic features that are observable.

Space observations are currently providing a glimpse of various new states of matter possibly present in compact stars, with terrestrial laboratories producing compelling evidence in support. The aim of this book is to facilitate the exchange of ideas OCo both established and emergent, both theoretical and experimental OCo in the areas of the physics of neutrinos, dense hadronic matter and compact stars. The proceedings have been selected for coverage in: . OCo Index to Scientific & Technical Proceedings- (ISTP- / ISI Proceedings). OCo Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings). OCo CC Proceedings OCo Engineering & Physical Sciences. Contents: Compact Stars: Sleuthing the Isolated Compact Stars (J J Drake); Phase Transitions in Neutron Stars (N K Glendenning); Formation and Evolution of Black Holes in the Galaxy (C-H Lee); Neutron Stars and Quark Stars (F Weber); Dense Matter: Role of Strange Quark Mass in Pairing Phenomena in QCD (H Abuki); Aspects of High Density Effective Theory (D K Hong); New Results from Belle (Y Kwon); Andreev Reflection in Color Superconductivity (M Sadzikowski & M Tachibana); Neutrinos: Cooling Delay for Protoquark Stars Due to Neutrino Trapping (J Berdermann et al.); The Minimal Cooling of Neutron Stars (D Page); The Solar Hep Process Confronts the Terrestrial Hen Process (T-S Park); Supernova Explosions and Neutrino Bursts from Supernovae (K Sato et al.); and other papers. Readership: Graduate students and researchers in astrophysics, astronomy, cosmology and high energy physics."

Space observations are currently providing a glimpse of various new states of matter possibly present in compact stars, with terrestrial laboratories producing compelling evidence in support. The aim of this book is to facilitate the exchange of ideas — both established and emergent, both theoretical and experimental — in the areas of the physics of neutrinos, dense hadronic matter and compact stars.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences

Neutrinos play an intriguing role in modern physics linking central questions of particle physics, cosmology and astrophysics. The contributions in this book reflect the present status of neutrino physics with emphasis on non-accelerator or beyond-accelerator experiments. Since a nonvanishing neutrino mass would yield an important boundary condition for GUT, SUSY or Superstring models and since neutrinos are the best candidates for dark matter in the universe, the many efforts to look for a neutrino mass, ranging from neutrino oscillation experiments using reactors, accelerators or the sun as neutrino sources, to tritium decay experiments and the search for neutrinoless double beta decay, are described in some detail. One of the sections is devoted to neutrinos from collapsing stars, including the supernova SN 1987 A. Possibilities for detecting cosmological neutrinos are discussed and an outlook to future experiments is given.

This book, written by leading experts of the field, gives an excellent up-to-date overview of modern neutrino physics and is useful for scientists and graduate students alike. The book starts with a history of neutrinos and then develops from the fundamentals to the direct determination of masses and lifetimes. The role of neutrinos in fundamental astrophysical problems is discussed in detail.

The neutrino is the most fascinating elementary particle due to its elusive nature and outstanding properties that have attracted the interest of generations of physicists since 1930, when it was first postulated by Wolfgang Pauli as a 'desperate remedy' to explain the apparent energy violation in the beta decay. Many fundamental discoveries in particle physics had the neutrino involved in one way or another. To date, neutrino physics is still one of the hottest topics of modern particle physics. Key experiments and significant theoretical developments have contributed in building up what we can call now the Standard Model of Neutrino Physics.The aim of the book is to provide graduate students and young researchers a comprehensive tutorial in modern neutrino physics, specially tailored with emphasis on the educational aspects. It provides an overview of the basics and of recent achievements in the field, from both experimental and theoretical points of view.

For many years neutrino was considered a massless particle. The theory of a two-componentneutrino,whichplayedacrucialroleinthecreationofthetheoryof theweakinteraction,isbasedontheassumptionthattheneutrinomassisequalto zero. We now know that neutrinos have nonzero, small masses. In numerous exp- iments with solar, atmospheric, reactor and accelerator neutrinos a new p- nomenon, neutrino oscillations, was observed. Neutrino oscillations (periodic transitionsbetweendifferent?avorneutrinos? ,? ,? )arepossibleonlyifneutrino e ? ? mass-squareddifferencesaredifferentfromzeroandsmalland?avorneutrinosare “mixed”. The discovery of neutrino oscillations opened a new era in neutrino physics: an era of investigation of neutrino masses, mixing, magnetic moments and other neutrino properties. After the establishment of the Standard Model of the el- troweak interaction at the end of the seventies, the discovery of neutrino masses was the most important discovery in particle physics. Small neutrino masses cannot be explained by the standard Higgs mechanism of mass generation. For their explanation a new mechanism is needed. Thus, small neutrino masses is the ?rst signature in particle physics of a new beyond the Standard Model physics. It took many years of heroic efforts by many physicists to discover n- trino oscillations. After the ?rst period of investigation of neutrino oscillations, manychallengingproblemsremainedunsolved.Oneofthemostimportantisthe problem of the nature of neutrinos with de?nite masses. Are they Dirac n- trinos possessing a conserved lepton number which distinguish neutrinos and antineutrinos or Majorana neutrinos with identical neutrinos and antineutrinos? Many experiments of the next generation and new neutrino facilities are now under preparation and investigation. There is no doubt that exciting results are ahead.

Since 1963, the Texas Symposia have been a biennial, peripatetic forum for forefront developments on a wide range of topics in relativistic astrophysics, from pulsars to string theory, from the birth of the universe to the death of stars. The 26 plenary lectures, 230 parallel session talks and 265 poster presentations attest to the scientific vitality of this interdisciplinary field.

A comprehensive introduction to neutrino physics with detailed description of neutrinos and their properties.

This important book presents the proceedings of the conference “Neutrinos and Implications for Physics Beyond the Standard Model”, put on by the Yang Institute for Theoretical Physics, State University of New York at Stony Brook.The observation of neutrino masses and lepton mixing constitutes the first confirmed evidence for physics beyond the Standard Model. This evidence includes the measured deficiency of charged current reactions induced by solar neutrinos and the anomalous zenith angle distribution of atmospheric neutrinos. A profound question now facing theorists is: What do these observations imply for new physics? At the conference, members of the major experiments gave an update on current experimental evidence from solar and atmospheric neutrino data for neutrino oscillations, and status reports from KamLAND and MiniBooNE. Leading theorists also reported on neutrinoless double beta decay, high energy neutrino scattering and precision electroweak data, theoretical models for neutrino masses and lepton mixing, and constraints from neutrino data, etc. Since neutrino physics is at present one of the most exciting areas of particle physics, this volume should be of interest to a wide variety of students and researchers in physics.