A Scientific Metaphysical Naturalisation of Information
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Quantum Biology: an Update and Perspective
quantum reports Review Quantum Biology: An Update and Perspective Youngchan Kim 1,2,3 , Federico Bertagna 1,4, Edeline M. D’Souza 1,2, Derren J. Heyes 5 , Linus O. Johannissen 5 , Eveliny T. Nery 1,2 , Antonio Pantelias 1,2 , Alejandro Sanchez-Pedreño Jimenez 1,2 , Louie Slocombe 1,6 , Michael G. Spencer 1,3 , Jim Al-Khalili 1,6 , Gregory S. Engel 7 , Sam Hay 5 , Suzanne M. Hingley-Wilson 2, Kamalan Jeevaratnam 4, Alex R. Jones 8 , Daniel R. Kattnig 9 , Rebecca Lewis 4 , Marco Sacchi 10 , Nigel S. Scrutton 5 , S. Ravi P. Silva 3 and Johnjoe McFadden 1,2,* 1 Leverhulme Quantum Biology Doctoral Training Centre, University of Surrey, Guildford GU2 7XH, UK; [email protected] (Y.K.); [email protected] (F.B.); e.d’[email protected] (E.M.D.); [email protected] (E.T.N.); [email protected] (A.P.); [email protected] (A.S.-P.J.); [email protected] (L.S.); [email protected] (M.G.S.); [email protected] (J.A.-K.) 2 Department of Microbial and Cellular Sciences, School of Bioscience and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK; [email protected] 3 Advanced Technology Institute, University of Surrey, Guildford GU2 7XH, UK; [email protected] 4 School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7XH, UK; [email protected] (K.J.); [email protected] (R.L.) 5 Manchester Institute of Biotechnology, Department of Chemistry, The University of Manchester, -
Everettian Probabilities, the Deutsch-Wallace Theorem and the Principal Principle
Everettian probabilities, the Deutsch-Wallace theorem and the Principal Principle Harvey R. Brown and Gal Ben Porath Chance, when strictly examined, is a mere negative word, and means not any real power which has anywhere a being in nature. David Hume (Hume, 2008) [The Deutsch-Wallace theorem] permits what philosophy would hitherto have regarded as a formal impossibility, akin to deriving an ought from an is, namely deriving a probability statement from a factual statement. This could be called deriving a tends to from a does. David Deutsch (Deutsch, 1999) [The Deutsch-Wallace theorem] is a landmark in decision theory. Nothing comparable has been achieved in any chance theory. [It] is little short of a philosophical sensation . it shows why credences should conform to [quantum chances]. Simon Saunders (Saunders, 'The Everett interpretation: probability' [unpublished manuscript]) Abstract This paper is concerned with the nature of probability in physics, and in quantum mechanics in particular. It starts with a brief discussion of the evolution of Itamar Pitowsky's thinking about probability in quantum theory from 1994 to 2008, and the role of Gleason's 1957 theorem in his derivation of the Born Rule. Pitowsky's defence of probability therein as a logic of partial belief leads us into a broader discussion of probability in physics, in which the existence of objective \chances" is questioned, and the status of David Lewis influential Principal Principle is critically examined. This is followed by a sketch of the work by David Deutsch and David Wallace which resulted in the Deutsch-Wallace (DW) theorem in Everettian quantum mechanics. -
Restricted Agents in Thermodynamics and Quantum Information Theory
Research Collection Doctoral Thesis Restricted agents in thermodynamics and quantum information theory Author(s): Krämer Gabriel, Lea Philomena Publication Date: 2016 Permanent Link: https://doi.org/10.3929/ethz-a-010858172 Rights / License: In Copyright - Non-Commercial Use Permitted This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library Diss. ETH No. 23972 Restricted agents in thermodynamics and quantum information theory A thesis submitted to attain the degree of DOCTOR OF SCIENCES of ETH ZURICH (Dr. sc. ETH Zurich) presented by Lea Philomena Kr¨amer Gabriel MPhysPhil, University of Oxford born on 18th July 1990 citizen of Germany accepted on the recommendation of Renato Renner, examiner Giulio Chiribella, co-examiner Jakob Yngvason, co-examiner 2016 To my family Acknowledgements First and foremost, I would like to thank my thesis supervisor, Prof. Renato Renner, for placing his trust in me from the beginning, and giving me the opportunity to work in his group. I am grateful for his continuous support and guidance, and I have always benefited greatly from the discussions we had | Renato without doubt has a clear vision, a powerful intuition, and a deep understanding of physics and information theory. Perhaps even more importantly, he has an exceptional gift for explaining complex subjects in a simple and understandable way. I would also like to thank my co-examiners Giulio Chiribella and Jakob Yngvason for agreeing to be part of my thesis committee, and for their input and critical questions in the discussions and conversations we had. -
Probability and Statistics, Parastatistics, Boson, Fermion, Parafermion, Hausdorff Dimension, Percolation, Clusters
Applied Mathematics 2018, 8(1): 5-8 DOI: 10.5923/j.am.20180801.02 Why Fermions and Bosons are Observable as Single Particles while Quarks are not? Sencer Taneri Private Researcher, Turkey Abstract Bosons and Fermions are observable in nature while Quarks appear only in triplets for matter particles. We find a theoretical proof for this statement in this paper by investigating 2-dim model. The occupation numbers q are calculated by a power law dependence of occupation probability and utilizing Hausdorff dimension for the infinitely small mesh in the phase space. The occupation number for Quarks are manipulated and found to be equal to approximately three as they are Parafermions. Keywords Probability and Statistics, Parastatistics, Boson, Fermion, Parafermion, Hausdorff dimension, Percolation, Clusters There may be particles that obey some kind of statistics, 1. Introduction generally called parastatistics. The Parastatistics proposed in 1952 by H. Green was deduced using a quantum field The essential difference in classical and quantum theory (QFT) [2, 3]. Whenever we discover a new particle, descriptions of N identical particles is in their individuality, it is almost certain that we attribute its behavior to the rather than in their indistinguishability [1]. Spin of the property that it obeys some form of parastatistics and the particle is one of its intrinsic physical quantity that is unique maximum occupation number q of a given quantum state to its individuality. The basis for how the quantum states for would be a finite number that could assume any integer N identical particles will be occupied may be taken as value as 1<q <∞ (see Table 1). -
The Beginning of Infinity: Explanations That Transform the World Pdf, Epub, Ebook
THE BEGINNING OF INFINITY: EXPLANATIONS THAT TRANSFORM THE WORLD PDF, EPUB, EBOOK David Deutsch | 487 pages | 29 May 2012 | Penguin Putnam Inc | 9780143121350 | English | New York, NY, United States The Beginning of Infinity: Explanations That Transform the World PDF Book Every argument includes premises in support of a conclusion, but the premises themselves are left unargued. Nov 12, Gary rated it it was amazing Shelves: science. In other words we must have some form of evidence, and it must be coherent with our other beliefs. Nov 12, Gary rated it it was amazing Shelves: science. I can't say why exactly. It seems more to the point to think of it as something emotive — as the expression of a mood. This will lead to the development of explanatory theories variation , which can then be criticized and tested selection. Accuracy and precision are important standards in our evaluation of explanations; standards that are absent in bad explanations. Every argument includes premises in support of a conclusion, but the premises themselves are left unargued. Deutsch starts with explanations being the basis for knowledge, and builds up basic, hard-to-argue-with principles into convincing monoliths that smash some conventional interpretations of knowledge, science and philosophy to tiny pieces. His reliance on Popper is problematic. I will be re-reading them again until it really sinks in. Evolution, in contrast, represents a good explanation because it not only fits the evidence but the details are hard to vary. Barefoot Season Susan Mallery. But the "Occam's Razor" described by the author is not the one practiced in reality. -
Physics Abstracts CLASSIFICATION and CONTENTS (PACC)
Physics Abstracts CLASSIFICATION AND CONTENTS (PACC) 0000 general 0100 communication, education, history, and philosophy 0110 announcements, news, and organizational activities 0110C announcements, news, and awards 0110F conferences, lectures, and institutes 0110H physics organizational activities 0130 physics literature and publications 0130B publications of lectures(advanced institutes, summer schools, etc.) 0130C conference proceedings 0130E monographs, and collections 0130K handbooks and dictionaries 0130L collections of physical data, tables 0130N textbooks 0130Q reports, dissertations, theses 0130R reviews and tutorial papers;resource letters 0130T bibliographies 0140 education 0140D course design and evaluation 0140E science in elementary and secondary school 0140G curricula, teaching methods,strategies, and evaluation 0140J teacher training 0150 educational aids(inc. equipment,experiments and teaching approaches to subjects) 0150F audio and visual aids, films 0150H instructional computer use 0150K testing theory and techniques 0150M demonstration experiments and apparatus 0150P laboratory experiments and apparatus 0150Q laboratory course design,organization, and evaluation 0150T buildings and facilities 0155 general physics 0160 biographical, historical, and personal notes 0165 history of science 0170 philosophy of science 0175 science and society 0190 other topics of general interest 0200 mathematical methods in physics 0210 algebra, set theory, and graph theory 0220 group theory(for algebraic methods in quantum mechanics, see -
The Conventionality of Parastatistics
The Conventionality of Parastatistics David John Baker Hans Halvorson Noel Swanson∗ March 6, 2014 Abstract Nature seems to be such that we can describe it accurately with quantum theories of bosons and fermions alone, without resort to parastatistics. This has been seen as a deep mystery: paraparticles make perfect physical sense, so why don't we see them in nature? We consider one potential answer: every paraparticle theory is physically equivalent to some theory of bosons or fermions, making the absence of paraparticles in our theories a matter of convention rather than a mysterious empirical discovery. We argue that this equivalence thesis holds in all physically admissible quantum field theories falling under the domain of the rigorous Doplicher-Haag-Roberts approach to superselection rules. Inadmissible parastatistical theories are ruled out by a locality- inspired principle we call Charge Recombination. Contents 1 Introduction 2 2 Paraparticles in Quantum Theory 6 ∗This work is fully collaborative. Authors are listed in alphabetical order. 1 3 Theoretical Equivalence 11 3.1 Field systems in AQFT . 13 3.2 Equivalence of field systems . 17 4 A Brief History of the Equivalence Thesis 20 4.1 The Green Decomposition . 20 4.2 Klein Transformations . 21 4.3 The Argument of Dr¨uhl,Haag, and Roberts . 24 4.4 The Doplicher-Roberts Reconstruction Theorem . 26 5 Sharpening the Thesis 29 6 Discussion 36 6.1 Interpretations of QM . 44 6.2 Structuralism and Haecceities . 46 6.3 Paraquark Theories . 48 1 Introduction Our most fundamental theories of matter provide a highly accurate description of subatomic particles and their behavior. -
Creativity and Untidiness
Search Creativity and Untidiness Submitted by Sarah Fitz-Claridge on 13 September, 2003 - 22:59 A Taking Children Seriously interview from TCS 21 by Sarah Fitz-Claridge (http://www.fitz-claridge.com/) Many TCS readers will know David Deutsch for his contributions to Taking Children Seriously and to the TCS List on the Internet, and perhaps as co-author of Home Education and the Law. Some will also know that he is a theoretical physicist who has, among other things, pioneered the new field of quantum computation. There is a major article about his work in the October 1995 Discover magazine (the issue was devoted to “Seven Ideas that could Change the World”). He is often quoted in the media and regularly makes appearances on television and radio programmes. You may have seen his programme on the physics of time travel in BBC 2's Antenna series. Recently, David was featured in the Channel 4 science documentary series, Reality on the Rocks, in which the actor, Ken Campbell, asked leading scientists about the nature of reality. Those who saw Reality on the Rocks may have caught a glimpse of David's extraordinarily untidy study, at his home in Oxford. Ken Campbell was so struck by its untidiness that he talks about it in his one-man show, Mystery Bruises. He relates the story of the Japanese film crew who, upon asking to tidy up David's home before filming there, were told that they could do so, on condition that they returned everything – every piece of paper, every book, every computer disk – to the exact position where it had been on the floor or wherever, and how they did just that! I put it to David that some might be surprised that someone so untidy could be so successful. -
The Connection Between Spin and Statistics
Sudarshan: Seven Science Quests IOP Publishing Journal of Physics: Conference Series 196 (2009) 012011 doi:10.1088/1742-6596/196/1/012011 The connection between spin and statistics Luis J. Boya Departamento de Física Teórica, Universidad de Zaragoza E - 50 009, Zaragoza, Spain E-Mail: [email protected] Abstract. After some brief historical remarks we recall the first demonstration of the Spin-Statistics theorem by Pauli, and some further developments, like Streater- Wightman’s, in the axiomatic considerations. Sudarshan’s short proof then follows by considering only the time part of the kinetic term in the lagrangian: the identity SU(2)=Sp(1,C) is crucial for the argument. Possible generalization to arbitrary dimensions are explored, and seen to depend crucially on the type of spinors, obeying Bott´s periodicity 8. In particular, it turns out that for space dimentions (7, 8, or 9) modulo 8, the conventional result does not automatically hold: there can be no Fermions in these dimensions. 1. Introduction The idea of this work came from discussions with Sudarshan in Zaragoza some years ago. George was surprised to learn that the properties of spinors crucial for the ordinary connection between spin and statistics would not hold in arbitrary dimensions, because of periodicity 8 of real Clifford algebras. After many discussions and turnarounds, I am happy today to present this collaboration, and I also apologize for the delay, for which I am mainly responsible. In any case, the priviledge to work and discuss physics with Sudarshan is a unique experience, for which I have been most fortunate. -
Curriculum Vitae
DAVID JOHN BAKER CURRICULUM VITAE Department of Philosophy [email protected] 2215 Angell Hall http://www-personal.umich.edu/~djbaker 435 S State St. Ann Arbor, MI 48109-1003 APPOINTMENTS Associate Professor of Philosophy, University of Michigan, 2014-present. Assistant Professor of Philosophy, University of Michigan, 2008-2014. EDUCATION PhD. in Philosophy, Princeton University, September 2008. Advisor: Hans Halvorson. B.S. in Philosophy (with Highest Honors) and Physics, University of Michigan, April 2003. AREAS OF SPECIALIZATION Philosophy of Physics, Philosophy of Science, Metaphysics. AREAS OF COMPETENCE Moral Philosophy, Logic, Philosophy of Religion, Epistemology. PUBLICATIONS “Does String Theory Posit Extended Simples?” Philosophers’ Imprint 16 (2016): Issue 18. “The Philosophy of Quantum Field Theory.” Oxford Handbooks Online (2016): DOI 10.1093/oxfordhb/9780199935314.013.33 “The Conventionality of Parastatistics,” with Hans Halvorson and Noel Swanson. The British Journal for the Philosophy of Science 66 (2015): 929-976. “How is spontaneous symmetry breaking possible? Understanding Wigner’s theorem in light of unitary inequivalence,” with Hans Halvorson. Studies in History and Philosophy of Modern Physics 44 (2013): 464-469. “Identity, Superselection Theory and the Statistical Properties of Quantum Fields.” Philosophy of Science 80 (2013): 262-285. “‘The Experience of Left and Right’ Meets the Physics of Left and Right.” Nous 46 (2012): 483-498. “Broken Symmetry and Spacetime.” Philosophy of Science 78 (2011): 128-148. “Symmetry and the Metaphysics of Physics.” Philosophy Compass 5 (2010): 1157-1166. “Antimatter,” with Hans Halvorson. The British Journal for the Philosophy of Science 61 (2010): 93-121. DAVID JOHN BAKER – CURRICULUM VITAE 2 “Against Field Interpretations of Quantum Field Theory.” The British Journal for the Philosophy of Science 60 (2009): 585-609. -
Arxiv:0805.0285V1
Generalizations of Quantum Statistics O.W. Greenberg1 Center for Fundamental Physics Department of Physics University of Maryland College Park, MD 20742-4111, USA, Abstract We review generalizations of quantum statistics, including parabose, parafermi, and quon statistics, but not including anyon statistics, which is special to two dimensions. The general principles of quantum theory allow statistics more general than bosons or fermions. (Bose statistics and Fermi statistics are discussed in separate articles.) The restriction to Bosons or Fermions requires the symmetrization postu- late, “the states of a system containing N identical particles are necessarily either all symmetric or all antisymmetric under permutations of the N particles,” or, equiv- alently, “all states of identical particles are in one-dimensional representations of the symmetric group [1].” A.M.L. Messiah and O.W. Greenberg discussed quantum mechanics without the symmetrization postulate [2]. The spin-statistics connec- arXiv:0805.0285v1 [quant-ph] 2 May 2008 tion, that integer spin particles are bosons and odd-half-integer spin particles are fermions [3], is an independent statement. Identical particles in 2 space dimensions are a special case, “anyons.” (Anyons are discussed in a separate article.) Braid group statistics, a nonabelian analog of anyons, are also special to 2 space dimensions All observables must be symmetric in the dynamical variables associated with identical particles. Observables can not change the permutation symmetry type of the wave function; i.e. there is a superselection rule separating states in inequivalent representations of the symmetric group and when identical particles can occur in states that violate the spin-statistics connection their transitions must occur in the same representation of the symmetric group. -
${\Mathbb Z} 2\Times {\Mathbb Z} 2 $-Graded Parastatistics In
Z2 ˆ Z2-graded parastatistics in multiparticle quantum Hamiltonians Francesco Toppan∗ August 27, 2020 CBPF, Rua Dr. Xavier Sigaud 150, Urca, cep 22290-180, Rio de Janeiro (RJ), Brazil. Abstract The recent surge of interest in Z2 Z2-graded invariant mechanics poses the challenge of ˆ understanding the physical consequences of a Z2 Z2-graded symmetry. In this paper it is shown that non-trivial physicsˆ can be detected in the multiparticle sector of a theory, being induced by the Z2 Z2-graded parastatistics obeyed by the particles. ˆ The toy model of the N 4 supersymmetric/ Z2 Z2-graded oscillator is used. In this set-up the one-particle energy“ levels and their degenerationsˆ are the same for both supersymmetric and Z2 Z2-graded versions. Nevertheless, in the multiparticle sector, a measurement of an observableˆ operator on suitable states can discriminate whether the system under consideration is composed by ordinary bosons/fermions or by Z2 Z2-graded ˆ particles. Therefore, Z2 Z2-graded mechanics has experimentally testable consequences. ˆ Furthermore, the Z2 Z2-grading constrains the observables to obey a superselection rule. ˆ As a technical tool, the multiparticle sector is encoded in the coproduct of a Hopf algebra defined on a Universal Enveloping Algebra of a graded Lie superalgebra with a braided tensor product. arXiv:2008.11554v1 [hep-th] 26 Aug 2020 CBPF-NF-007/20 ∗E-mail: [email protected] 1 1 Introduction This paper presents a theoretical test of the physical consequences of the Z2 Z2-graded paras- ˆ tatistics in a toy model case of a quantum Hamiltonian.