Category: Quantum Theory

Wolfgang Pauli: Wissenschaftlicher Briefwechsel mit Bohr, by Dr. Karl von Meyenn (eds.)

By Dr. Karl von Meyenn (eds.)

Aus Paulis letztem Lebensjahrzehnt sind über 2000 Briefe - etwa 2/3 seiner gesamten Korrespondenz - erhalten. Neben der Physik wird hier auch der allgemeinere geistesgeschichtliche Hintergrund unserer Naturwissenschaft durch einen der konsequentesten und originellsten Denker unserer Zeit beleuchtet. In einem ersten Teilband werden zunächst 430 Briefe aus diesem reichhaltigen Bestand vorgelegt, die Pauli während der Jahre 1950-1952 mit seventy two verschiedenen Personen austauschte. Im Zentrum dieser Briefe steht die von Pauli maßgeblich mitbestimmte aktuelle physikalische Grundlagenforschung der frühen 50er Jahre: die Entwicklung der nicht-lokalen Quantenfeldtheorie und die damals beginnende Auseinandersetzung mit Heisenbergs Theorie der Elementarteilchen und mit Bohms Theorie der verborgenen Parameter. Daneben treten jetzt immer häufiger auch ideengeschichtliche Probleme in den Vordergrund. In Übereinstimmung mit seinem Glauben an einen psycho-physischen Wirklichkeitszusammenhang im Sinne der Kopenhagener Komplementaritätsidee hat Pauli diese Fragen sowohl mit seinen physikalischen Kollegen als auch mit dem Psychologen C.G. Jung und dessen Schülern erörtert. Über das rein historische Interesse hinausgehend regen diese Briefe zur Reflexion über die Grenzen unseres gegenwärtigen naturwissenschaftlichen Weltbildes an.

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Reductionism, Emergence and Levels of Reality: The by Sergio Chibbaro, Lamberto Rondoni, Angelo Vulpiani

By Sergio Chibbaro, Lamberto Rondoni, Angelo Vulpiani

Scientists have regularly tried to give an explanation for the area by way of a couple of unifying ideas. within the 5th century B.C. Democritus boldly claimed that truth is just a set of indivisible and everlasting elements or atoms. Over the centuries his doctrine has remained a landmark, and lots more and plenty development in physics is because of its contrast among subjective belief and aim truth. This booklet discusses thought relief in physics, which states that the complete is not anything greater than the sum of its elements: the houses of items are at once made up our minds through their constituent elements. Reductionism bargains with the relation among assorted theories that handle varied degrees of truth, and makes use of extrapolations to use that relation in several sciences. fact indicates a fancy constitution of connections, and the dream of a unified interpretation of all phenomena in different basic legislation keeps to draw someone with actual philosophical and medical pursuits. If the main radical reductionist standpoint is right, the connection among disciplines is precisely inclusive: chemistry turns into physics, biology turns into chemistry, and so forth. finally, just one technology, certainly only a unmarried idea, could live on, with all others merging within the idea of every little thing. Is the present coexistence of alternative sciences an insignificant ancient enterprise so that it will finish whilst the idea of every little thing has been confirmed? Can there be a unified description of nature?
Rather than an research of complete reductionism, this publication specializes in points of idea relief in physics and stimulates mirrored image on comparable questions: is there any facts of exact relief? Are the examples utilized in the philosophy of technology too simplistic? What has been endangered via the quest for (the) final fact? Has the dream of reductionist cause created any monsters? is gigantic technological know-how one such monster? what's the aspect of embedding technological know-how Y inside of technological know-how X, if predictions can't be made on that basis?

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Mathematical Methods of Many-Body Quantum Field Theory by Detlef Lehmann

By Detlef Lehmann

Mathematical tools of Many-Body Quantum box concept deals a complete, mathematically rigorous remedy of many-body physics. It develops the mathematical instruments for describing quantum many-body platforms and applies them to the many-electron approach. those instruments comprise the formalism of moment quantization, box theoretical perturbation concept, sensible essential tools, bosonic and fermionic, and estimation and summation options for Feynman diagrams. one of the actual results mentioned during this context are BCS superconductivity, s-wave and better l-wave, and the fractional quantum corridor impression. whereas the presentation is mathematically rigorous, the writer doesn't concentration completely on special definitions and proofs, but in addition indicates tips to truly practice the computations. proposing many contemporary advances and clarifying tough strategies, this e-book offers the history, effects, and element had to extra discover the problem of whilst the traditional approximation schemes during this box truly paintings and after they holiday down. whilst, its transparent factors and methodical, step by step calculations shed welcome gentle at the confirmed physics literature.

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Quantum Mechanics: A Paradigms Approach by David McIntyre, Corinne A Manogue, Janet Tate

By David McIntyre, Corinne A Manogue, Janet Tate

This cutting edge new textual content offers quantum mechanics in a fashion that without delay displays the equipment utilized in sleek physics research—making the fabric extra approachable and getting ready scholars extra completely for actual learn. so much texts during this region begin with a little background after which circulation on to wave-particle issues of accompanying heavy mathematical research; Quantum Mechanics offers a beginning in experimental phenomena and makes use of a extra approachable, much less intimidating, extra robust mathematical matrix version. starting with the Stern-Gerlach experiments and the dialogue of spin measurements, and utilizing bra-ket notation, the authors introduce an incredible notational procedure that's used all through quantum mechanics. This non-traditional presentation is designed to reinforce scholars’ realizing and enhance their intuitive take hold of of the subject.

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Quantum physics: a first encounter by Valerio Scarani

By Valerio Scarani

Quantum physics is usually understand as a unusual and summary concept, which physicists needs to use in an effort to make right predictions. yet many fresh experiments have proven that the weirdness of the idea easily mirrors the weirdness of phenomena: it's Nature itself, and never simply our descriptions of it that behaves in an amazing method. This e-book selects these, between those usual quantum phenomena, whose rigorous description calls for neither the formalism, no longer a tremendous historical past in physics. the 1st a part of the ebook offers with the phenomenon of single-particle interference, masking the old questions of wave-particle duality, aim randomness and the boundary among the quantum and the classical global, but additionally the new proposal of quantum cryptography. the second one half introduces the trendy subject matter of entanglement, via proposing two-particle interference phenomena and discussing Bell's inequalities. A concise evaluation of the most interpretations of quantum physics is supplied.

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Relativistische Quantenmechanik by Georg Wolschin (auth.)

By Georg Wolschin (auth.)

Dieses Buch richtet sich an Studierende der Physik, die bereits über Grundkenntnisse der Quantenmechanik verfügen und relativistische Wellengleichungen kennenlernen möchten. Im Hauptteil des Buchs behandelt der Autor die Klein-Gordon-Gleichung und die Dirac-Gleichung, wobei er deren Bedeutung hervorhebt und auf interessante Anwendungen eingeht. Daneben wird die historische Entwicklung der Gleichungen thematisiert eine Verbindung zur Galilei-invarianten nicht-relativistischen Quantenmechanik hergestellt. Zuletzt werden kurz die Grundzüge der Quantenelektrodynamik und Elemente der relativistischen Streutheorie erläutert. Anhand von Aufgaben werden die Leser dazu motiviert, den Stoff selbst beispielhaft nachzurechnen.

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