What Flashes Up: Theological-Political-Scientific Fragments

2017 ◽  
Author(s):  
Karen Barad
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Physics ◽  
Judith Butler ◽  
Quantum Field ◽  
The World ◽  
Karen Barad ◽  
Human Ethics ◽  
Realist Interpretation ◽  
The Universe

In “What Flashes Up,” Karen Barad exposes a startling new sense of matter. The “agential realist” interpretation of quantum physics in her monumental Meeting the Universe Halfway had already brought the indeterminacy and relationality—the “intra-activity”—of quantum ontology into resonance with human ethics: All beings compose and partake in the responsive structure of the world. “Intra-acting responsibly as part of the world means taking account of the entangled phenomena that are intrinsic to the world’s vitality and being responsive to the possibilities that might help us flourish.” In the present discussion, Barad draws Walter Benjamin’s messianic “now-time” via Judith Butler and quantum field theory into a deep meditation on the matter of time, a time that breaks from the scientific and political modernisms of purportedly linear progress.

Scientific Realism and the Quantum

2020 ◽  
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Mechanics ◽  
Quantum Theory ◽  
Scientific Realism ◽  
Quantum Physics ◽  
Quantum Field ◽  
Third Way ◽  
The World ◽  
Modern Physics

Scientific realism has traditionally maintained that our best scientific theories can be regarded as more or less true and as representing the world as it is (more or less). However, one of our very best current theories—quantum mechanics—has famously resisted such a realist construal, threatening to undermine the realist stance altogether. The chapters in this volume carefully examine this tension and the reasons behind it, including the underdetermination generated by the multiplicity of formulations and interpretations of quantum physics, each presenting a different way the world could be. Authors in this volume offer a range of alternative ways forward: some suggest new articulations of realism, limiting our commitments in one way or another; others attempt to articulate a ‘third way’ between traditional forms of realism and antirealism, or are critical of such attempts. Still others argue that quantum theory itself should be reconceptualised, or at least alternative formulations should be considered in the hope of evading the problems faced by realism. And some examine the nature of these issues when moving beyond quantum mechanics to quantum field theory. Taken together they offer an exciting new set of perspectives on one of the most fundamental questions in the philosophy of modern physics: how can one be a realist about quantum theory, and what does this realism amount to?

scholarly journals The Dirac Sea, T and C Symmetry Breaking, and the Spinor Vacuum of the Universe

Universe ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 124
Author(s):  
Vadim Monakhov
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Symmetry Breaking ◽  
Momentum Space ◽  
Quantum Field ◽  
Conjugation Operator ◽  
Dirac Sea ◽  
Canonical Anticommutation Relations ◽  
The Universe ◽  
Dirac Conjugation

We have developed a quantum field theory of spinors based on the algebra of canonical anticommutation relations (CAR algebra) of Grassmann densities in the momentum space. We have proven the existence of two spinor vacua. Operators C and T transform the normal vacuum into an alternative one, which leads to the breaking of the C and T symmetries. The CPT is the real structure operator; it preserves the normal vacuum. We have proven that, in the theory of the Dirac Sea, the formula for the charge conjugation operator must contain an additional generalized Dirac conjugation operator.

scholarly journals El significado filosófico de la teoría cuántica de campos

2010 ◽  
Vol 16 ◽  
Author(s):  
Rafael A. Alemañ Berenguer
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Physical Science ◽  
Quantum Physics ◽  
Quantum Field ◽  
Basic Properties ◽  
Global Understanding ◽  
Conceptual Foundations ◽  
Theory Unification ◽  
Unification Of Forces

ResumenLos abundantes análisis filosóficos sobre la física cuántica no se han visto en general acompa- ñados por una consideración equiparable hacia su prolongación natural en la teoría cuántica de campos. Esta teoría se ha revelado en su versión electromagnética como una de las herramientas predictivas más precisas de la ciencia física. No obstante, sus cimientos conceptuales siguen siendo altamente controvertidos y cabe dudar si una ampliación de su formalismo conducirá a la tan deseada unificación de las fuerzas fundamentales, y por ende, a una comprensión global de las propiedades básicas de la naturaleza.Palabras claveFilosofía de la física, teoría cuántica de campos, unificación de fuerzas, predicciónAbstractThe abundant philosophical analyses on quantum physics have not been generally followed by an equivalent consideration toward their natural continuation in the quantum field theory. This theory is regarded in its electromagnetic version as one of the best predictive tools in physical science. Nevertheless, its conceptual foundations are still surrounded by controversy and it is doubtful if an extension of its formalism will lead us to the unification of the four basic forces, and therefore to a global understanding of the basic properties of nature.KeywordsPhilosophy of physics, quantum field theory, unification of forces, prediction

Quantum Field Theory, Quantum Physics and Micro-Macro Duality

10.1142/10941 ◽  
2021 ◽  
Author(s):  
Izumi Ojima ◽  
Kazuya Okamura ◽  
Hayato Saigo
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Physics ◽  
Quantum Field

‘In the Light of Leibniz and Lucretius’: An Encounter between Deleuze and New Materialism

2021 ◽  
Vol 15 (4) ◽  
pp. 497-522
Author(s):  
Hanjo Berressem
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Physics ◽  
New Materialism ◽  
Quantum Field ◽  
Virtual Particles ◽  
Continuity And Discontinuity

While most new materialists, including Thomas Nail, tend to distance themselves from Deleuze, this essay reads the encounter of Nail's ‘process materialism’ and Deleuzian philosophy as productive rather than contentious. After tracing the affinities of their notions of continuity and discontinuity by way of Deleuze's The Fold: Leibniz and the Baroque and Nail's Lucretius I: An Ontology of Motion and Being and Motion, the essay considers Nail's unfolding of Lucretius’ luminous philosophy in relation to Deleuze's reading of Lucretius from within Deleuze's own ‘philosophical luminism’. Within the multiple overlaps between Nail and Deleuze, particularly vis-à-vis quantum physics and quantum field theory, their divergent readings of the particle–wave duality bring about a productive conceptual tension. Nail's argument about the ontological precedence of waves over particles (‘process precedes existence’) is illuminated by Deleuze's concept of their ontological complementarity (actual particles and virtual waves, virtual particles and actual waves), and vice versa.

Inhomogeneous solutions in cosmology

1990 ◽  
Vol 68 (9) ◽  
pp. 824-826
Author(s):  
Paul S. Wesson
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
General Relativity ◽  
Particle Physics ◽  
Quantum Field ◽  
Einstein’S Equations ◽  
Einstein's Equations ◽  
Cosmological Solutions ◽  
The Universe ◽  
Friedmann Robertson Walker

The standard cosmological solutions of Einstein's equations of general relativity describe a fluid that is homogeneous and isotropic in density and pressure. These solutions, often called the Friedmann–Robertson–Walker solutions, are believed to be good descriptions of the universe at the present time. But early on, processes connected with particle physics and quantum field theory may have caused localized inhomogeneities, and recently some new kinds of solution of Einstein's equations have been found, which may describe such regions. In one solution being studied by Wesson and Ponce de Leon (Phys. Rev. D: Part. Fields, 39, 420 (1989)), the density is still uniform but the pressure is nonuniform about a centre. The mass is given by a relation that looks like the familiar Newtonian relation m = (4/3)πR3ρ. However, the solution has other properties that are quite strange (e.g. a region of negative pressure and a kind of dipolar geometry). It is not known if solutions like this are merely mathematical curiosities or imply something about the behaviour of real matter in extreme situations.

The Beginning of the Universe and of Time

1996 ◽  
Vol 26 (2) ◽  
pp. 169-189 ◽  
Author(s):  
Richard Swinburne
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Material Objects ◽  
Causal Powers ◽  
Quantum Field ◽  
Physical Objects ◽  
Physical Cosmology ◽  
The Universe

What does it mean to say that the Universe had a beginning? There are different ways of spelling this out. I shall develop them, consider the logical relations between them, and support one as best capturing our intuitive understanding of this notion. I shall then draw a conclusion about whether Time could (it is logically possible) have a beginning. Finally I shall consider, on my preferred understanding of what it is for the Universe to have a beginning, what physical cosmology can show about whether it did in fact have a beginning.I understand by a Universe, a system of substances temporally connected to each other. I understand by a substance a thing with causal powers or liabilities, that is able to act or be acted upon. Substances will thus include both material objects and any other physical objects there may be such as chunks of energy or the fluctuating ‘vacuum’ of quantum field theory, and immaterial objects, if there are any, such as souls and ghosts. I understand by two substances being temporally connected that they exist for periods of time which are either earlier than, overlap with, or are later than each other.

scholarly journals Foundations of fundamental mechanics (1)

2019 ◽  
Author(s):  
Thomas Blommaert ◽  
Michael Appleby
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
General Theory ◽  
Potential Field ◽  
Quantum Physics ◽  
Space Time ◽  
Quantum Field ◽  
Theory Of Relativity ◽  
General Theory Of Relativity

The following paper presents a description on the fundamental mechanics of nature.This is the first of a set of papers entitled Foundations of fundamental mechanics, in which this first paper is specifically on the nature of gravity.For all intents and purposes this paper is NOT intended to be a replacement for the General theory of Relativity (GR) (A. Einstein 1915–1916), rather it is intended to be a complimentary extension of its work, with the purpose of extending it into quantum physics. Most notably, to relate it to quantum field theory (QFT), by quantizing the metric of space-time into a potential field theory.

scholarly journals The equivalence Spacetime curvature - Information wave function Entropy: a link between quantum mechanics and general relativity in Universe and Brain

2021 ◽  
Author(s):  
hind ZAARAOUI
Keyword(s):  
Field Theory ◽  
Quantum Physics ◽  
Path Integrals ◽  
Quantum Field ◽  
Spacetime Curvature ◽  
Incoming Information ◽  
Information Wave Function ◽  
Curvature Information ◽  
The Brain ◽  
The Universe

Our work consists on showing that the Spacetime curvature introduced by Einstein in the Universe and also in the Brain is a result of the Information Entropy of different quantum Paths of elementary particles (leptons, bosons…) of path integrals model. We started by seeing the structure of how the incoming information is processed and then propagated in the brain and how the latter is deformed in each neuron to thus create a potential reaction response distorted or not. In quantum physics, and particularly in quantum field theory (QFT), the paths in path integrals have an equivalent role to paths between two neighboring linked neurons (synapses + neurotransmitters + dendrites). Using this modeling, we prove mathematically that the entropy of the Information coming from the paths could be equivalent to the Spacetime curvature in Universe as in Brain

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