Download or read book Model Building in the Free Fermionic Formulation of Superstrings written by Herbert Karl Dreiner and published by . This book was released on 1989 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Landscape of Free Fermionic Gauge Models written by Douglas G. Moore and published by Springer. This book was released on 2016-02-03 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the author describes the development of a software framework to systematically construct a particular class of weakly coupled free fermionic heterotic string models, dubbed gauge models. In their purest form, these models are maximally supersymmetric (N = 4), and thus only contain superpartners in their matter sector. This feature makes their systematic construction particularly efficient, and they are thus useful in their simplicity. The thesis first provides a brisk introduction to heterotic strings and the spin-structure construction of free fermionic models. Three systematic surveys are then presented, and it is conjectured that these surveys are exhaustive modulo redundancies. Finally, the author presents a collection of metaheuristic algorithms for searching the landscape for models with a user-specified spectrum of phenomenological properties, e.g. gauge group and number of spacetime supersymmetries. Such algorithms provide the groundwork for extended generic free fermionic surveys.
Download or read book Quarks and Leptons From Orbifolded Superstring written by Kang-Sin Choi and published by Springer. This book was released on 2006-09-10 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a detailed guide on the journey towards the minimal supersymmetric standard model down the orbifold road. It takes the viewpoint that the chirality of matter fermions is an essential aspect that orbifold compactification allows to derive from higher-dimensional string theories in a straightforward manner. Halfway between textbook and tutorial review, the book is intended for the graduate student and particle phenomenologist wishing to get acquainted with this field.
Download or read book Superstrings And Particle Theory written by Clavelli Louis J and published by #N/A. This book was released on 1990-04-01 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances In The Superworld Proceedings Of The International Workshop written by J L Lopez and published by World Scientific. This book was released on 1994-03-29 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The realization that precision LEP data lend support to the idea of supersymmetric grand unification and supersymmetry in general, led to the organization of the First HARC International Workshop on Recent Advances in the SuperWorld. The idea was to have a workshop that discussed all aspects of the supersymmetric world — the SuperWorld as it should be properly known. These aspects are so diverse that they are usually studied by high energy physicists with vastly different interests. The selection of speakers included the whole spectrum in 'energy', from experimental physicists, to specialists in low energy phenomenology, supersymmetric grand unification, supergravity, superstrings and supercosmology.
Download or read book Calculating Fermion Masses in Superstring Derived Standard like Models written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the intriguing achievements of the superstring derived standard-like models in the free fermionic formulation is the possible explanation of the top quark mass hierarchy and the successful prediction of the top quark mass. An important property of the superstring derived standard-like models, which enhances their predictive power, is the existence of three and only three generations in the massless spectrum. Up to some motivated assumptions with regard to the light Higgs spectrum, it is then possible to calculate the fermion masses in terms of string tree level amplitudes and some VEVs that parameterize the string vacuum. I discuss the calculation of the heavy generation masses in the superstring derived standard-like models. The top quark Yukawa coupling is obtained from a cubic level mass term while the bottom quark and tau lepton mass terms are obtained from nonrenormalizable terms. The calculation of the heavy fermion Yukawa couplings is outlined in detail in a specific toy model. The dependence of the effective bottom quark and tau lepton Yukawa couplings on the flat directions at the string scale is examined. The gauge and Yukawa couplings are extrapolated from the string unification scale to low energies. Agreement with[alpha][sub strong], sin[sup 2][theta][sub W] and[alpha][sub em] at M[sub Z] is imposed, which necessitates the existence of intermediate matter thresholds. The needed intermediate matter thresholds exist in the specific toy model. The effect of the intermediate matter thresholds on the extrapolated Yukawa couplings is studied. It is observed that the intermediate matter thresholds help to maintain the correct b/[tau] mass relation. It is found that for a large portion of the parameter space, the LEP precision data for[alpha][sub strong], sin[sup 2][theta][sub W] and[alpha][sub em], as well as the top quark mass and the b/[tau] mass relation can all simultaneously be consistent with the superstring derived standard-like models.
Download or read book International Workshop on Supersymmetry and Unification of Fundamental Interactions written by Christopher Kolda and published by . This book was released on 1994 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Physics Index written by and published by . This book was released on 1991 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics From Planck Scale To Electroweak Scale Proceedings Of The Us polish Workshop 1994 written by Pran Nath and published by World Scientific. This book was released on 1995-04-28 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the Workshop covers a broad range of subjects from low energy supersymmetry through supersymmetric grand unification to supergravity and superstring theories. Although the focus was mainly on theoretical problems and ideas, the present and future experimental searches of new particles were also discussed.
Download or read book Unified Symmetry written by Behram N. Kursunogammalu and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The twenty-second Coral Gables conference "UNIFIED SYMMETRY: In the Small and In the Large" continued with the efforts to unify the small and the large. The information gathered with the Huble telescope has in part, in the absence of the SCC , provided a basis for the physicists to unify cosmology and elementary particle physics. The congressional cancellation of the biggest experimental project on the frontiers of physics should not be regarded as an insurmountable obstacle to progress in theoretical physics. The physicists' rise to prominence was mostly reached through their creation of the nuclear era. The post cold war era has somewhat reduced the political, military, and, in part, the social role of the physicist. Some in the administration and the Congress would like physicists to focus on the directly utilitarian aspects of science. Thus, some people do not realize that this regimentation of science would inhibit the creativity. The contributions of solid state physics research to the advancement of technology is the result of physics freely pursued independently of its applications. Modern Physics beginning with Newton's theory of gravity has enabled us to create the space age, to contribute to various technologies, and to impact on our technological modus vivendi.
Download or read book Beyond the Desert 2003 written by Hans-Volker Klapdor-Kleingrothaus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the Proceedings of the Fourth International Conference on Particle Physics Beyond the Standard Model - BEYOND THE DESERT 2003. Emphasis at BEYOND03 was put on supergravity, which had its twentieth birthday that year, on neutrino physics and dark matter search, and on gravitation and cosmology, and some other very important fields. The book resents a timely and valuable overview of the status and future potential and trends in theoretical and experimental particle physics, in the complementary sectors of accelerator, non-accelerator and space physics.
Download or read book Superstrings Composite Structures and Cosmology written by Rabindra Nath Mohapatra and published by . This book was released on 1987 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Physics written by Maurice Levy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1987 Cargese Summer Institute on Partiele Physies was organized by the Universite Pierre et Marie Curie, Paris (M. LEVY and J.-L. BASDEVANT), CERN (M. JACOB), the Universite Catholique de Louvain (D. SPEISER and J. WEYERS), and the Katholieke Universiteit te Leuven (R. GASTHANS), whieh, sinee 1975, have joined their efforts and worked in eommon. It was the 25th summer institute held at Cargese and the ninth one organized by the two institutes of theoretieal physics at Leuven and Louvain-la-Neuve. The 1987 school was centered around two main themes: the re cent developments in string theory and the physics of high energy colliders. As the standard model of the fundamental interaetions has repeatedly proved to be suecessful in explaining the experimental findings in par tiele physies, more attention was given in this school to possible new features arising from string inspired models. This led us to inelude in the program aseries of lectures devoted to string theory per se. They eovered the more mathematical aspects of the theory as weIl as the phenomenological implications. The second theme concerns high energy collider physics and was meant to prepare young physicists for the future experimental results to be expected from the pp and e+e- colliders. It brought theorists and ex perimentalists actively together in their search for a better understand ing of the high energy phenomena.
Download or read book String Phenomenology 2003 written by Veronica Sanz and published by World Scientific. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a remarkable overview of the current trends in string phenomenology, through the contributions of an international team of researchers who present their latest results. Dedicated to the memory of the late Professor Ian Kogan, this volume will fill a gap in the literature on a comprehensive overview of the subject.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
Download or read book Standard Like Models in the Free Fermionic String Formulation and Phenomenological Implications written by Alon Eliyahou Faraggi and published by . This book was released on 1991 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
