Report and Opinion 2019;11(4) 27
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Anthropic Measure of Hominid (And Other) Terrestrials. Brandon Carter Luth, Observatoire De Paris-Meudon
Anthropic measure of hominid (and other) terrestrials. Brandon Carter LuTh, Observatoire de Paris-Meudon. Provisional draft, April 2011. Abstract. According to the (weak) anthropic principle, the a priori proba- bility per unit time of finding oneself to be a member of a particular popu- lation is proportional to the number of individuals in that population, mul- tiplied by an anthropic quotient that is normalised to unity in the ordinary (average adult) human case. This quotient might exceed unity for conceiv- able superhuman extraterrestrials, but it should presumably be smaller for our terrestrial anthropoid relations, such as chimpanzees now and our pre- Neanderthal ancestors in the past. The (ethically relevant) question of how much smaller can be addressed by invoking the anthropic finitude argument, using Bayesian reasonning, whereby it is implausible a posteriori that the total anthropic measure should greatly exceed the measure of the privileged subset to which we happen to belong, as members of a global civilisation that has (recently) entered a climactic phase with a timescale of demographic expansion and technical development short compared with a breeding gen- eration. As well as “economist’s dream” scenarios with continual growth, this finitude argument also excludes “ecologist’s dream” scenarios with long term stabilisation at some permanently sustainable level, but it it does not imply the inevitability of a sudden “doomsday” cut-off. A less catastrophic likelihood is for the population to decline gradually, after passing smoothly through a peak value that is accounted for here as roughly the information content ≈ 1010 of our genome. The finitude requirement limits not just the future but also the past, of which the most recent phase – characterised by memetic rather than genetic evolution – obeyed the Foerster law of hyperbolic population growth. -
Durham E-Theses
Durham E-Theses Black holes, vacuum decay and thermodynamics CUSPINERA-CONTRERAS, JUAN,LEOPOLDO How to cite: CUSPINERA-CONTRERAS, JUAN,LEOPOLDO (2020) Black holes, vacuum decay and thermodynamics, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/13421/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail: [email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk Black holes, vacuum decay and thermodynamics Juan Leopoldo Cuspinera Contreras A Thesis presented for the degree of Doctor of Philosophy Institute for Particle Physics Phenomenology Department of Physics University of Durham England September 2019 To my family Black holes, vacuum decay and thermodynamics Juan Leopoldo Cuspinera Contreras Submitted for the degree of Doctor of Philosophy September 2019 Abstract In this thesis we study two fairly different aspects of gravity: vacuum decay seeded by black holes and black hole thermodynamics. The first part of this work is devoted to the study of black holes within the (higher dimensional) Randall- Sundrum braneworld scenario and their effect on vacuum decay rates. -
Editorial Note To: Brandon Carter, Large Number Coincidences and the Anthropic Principle in Cosmology
Gen Relativ Gravit (2011) 43:3213–3223 DOI 10.1007/s10714-011-1257-8 GOLDEN OLDIE EDITORIAL Editorial note to: Brandon Carter, Large number coincidences and the anthropic principle in cosmology George F. R. Ellis Published online: 27 September 2011 © Springer Science+Business Media, LLC 2011 Keywords Cosmology · Confrontation of cosmological theories with observational data · Anthropic principle · World ensemble · Golden Oldie Editorial The anthropic principle is one of the most controversial proposals in cosmology. It relates to why the universe is of such a nature as to allow the existence of life. This inevitably engages with the foundations of cosmology, and has philosophical as well as technical aspects. The literature on the topic is vast—the Carter paper reprinted here [10] has 226 listed citations, and the Barrow and Tipler book [3] has 1,740. Obviously I can only pick up on a few of these papers in this brief review of the impact of the paper. While there were numerous previous philosophical treatises on the topic, stretching back to speculations about the origin of the universe in ancient times (see [3]fora magisterial survey), scientific studies are more recent. A well known early one was by biologist Alfred Russell Wallace, who wrote in 1904: “Such a vast and complex uni- verse as that which we know exists around us, may have been absolutely required … in order to produce a world that should be precisely adapted in every detail for the orderly development of life culminating in man” [50]. But that was before modern cosmology was established: the idea of the expanding and evolving universe was yet to come. -
Link to the Live Plenary Sessions
IWARA2020 Video Conference Mexico City time zone, Mexico 9th International Workshop on Astronomy and Relativistic Astrophysics 6 – 12 September, 2020 Live Plenary Talks Program SUNDAY MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY SATURDAY DAYS/HOUR 06/09/2020 07/09/2020 08/09/2020 09/09/2020 10/09/2020 11/09/2020 12/09/2020 COSMOLOGY, DE MMA, DE, DM, CCGG COMPSTARS, DM, GWS DENSE MATTER, QCD DM, DE, GWS, BHS DENSE MATTER, SNOVAE ARCHAEOASTRONOMY TOPICS DM, COMPACT STARS X- & CR- RAYS, MWA PARTICLES, ϒ-RAYS QGP, QFT, HIC, GWS GRAVITATION, GALAXIES DM, COMPACT STARS BHS, GRBS, SNOVAE GRAVITY, BHS, GWS NSS, SNOVAE, GRAVITY QCD, HIC, SNOVAE DM, COSMOLOGY EROSITA DE, BHS, COSMOLOGY LIVE PLENARY TALKS PETER HESS & THOMAS BOLLER & STEVEN GULLBERG & PETER HESS & Steven Gullberg & LUIS UREÑA-LOPEZ & PETER HESS & MODERATORS CESAR ZEN GABRIELLA PICCINELLI CESAR ZEN THOMAS BOLLER Luis Ureña-Lopes BENNO BODMANN CESAR ZEN 07:00 WAITING ROOM WAITING ROOM WAITING ROOM WAITING ROOM WAITING ROOM WAITING ROOM WAITING ROOM 07:45 OPENING 08:00 R. SACAHUI P. SLANE A. SANDOVAL S. FROMENTEAU G. PICCINELLI V. KARAS F. MIRABEL60’ 08:30 M. GAMARRA U. BARRES G. WOLF J. RUEDA R. XU J. STRUCKMEIER60’ 09:00 ULLBERG ARRISON ANAUSKE ENEZES EXHEIMER S. G D. G M. H D. M 60’ V. D D. ROSIŃSKA 09:30 V. ORTEGA G. ROMERO D. VASAK D. PAGE J. AICHELIN M. VARGAS 10:00 – CONFERENCE-BREAK: VIDEO-SYNTHESIS OF RECORDED VIDEOS LIVE SPOTLIGHTS TALKS MODERATORS MARIANA VARGAS MAGAÑA & GABRIELLA PICCINELLI 10:15 J. HORVATH Spotlight Session 1 SPOTLIGHT SESSION 2 Spotlight Session 3 Spotlight Session 4 Spotlight Session 5 SPOTLIGHT SESSION 6 MARCOS MOSHINSKY 10:45 AWARD 11:15 – CONFERENCE-BREAK: VIDEO-SYNTHESIS OF RECORDED VIDEOS LIVE PLENARY TALKS PETER HESS & THOMAS BOLLER & STEVEN GULLBERG & PETER HESS & Steven Gullberg & LUIS UREÑA-LOPEZ & PETER HESS & MODERATORS CESAR ZEN GABRIELLA PICCINELLI CESAR ZEN THOMAS BOLLER Luis Ureña-Lopes BENNO BODMANN CESAR ZEN C. -
Three Duality Symmetries Between Photons and Cosmic String Loops, and Macro and Micro Black Holes
Symmetry 2015, 7, 2134-2149; doi:10.3390/sym7042134 OPEN ACCESS symmetry ISSN 2073-8994 www.mdpi.com/journal/symmetry Article Three Duality Symmetries between Photons and Cosmic String Loops, and Macro and Micro Black Holes David Jou 1;2;*, Michele Sciacca 1;3;4;* and Maria Stella Mongiovì 4;5 1 Departament de Física, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain 2 Institut d’Estudis Catalans, Carme 47, Barcelona 08001, Spain 3 Dipartimento di Scienze Agrarie e Forestali, Università di Palermo, Viale delle Scienze, Palermo 90128, Italy 4 Istituto Nazionale di Alta Matematica, Roma 00185 , Italy 5 Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica (DICGIM), Università di Palermo, Viale delle Scienze, Palermo 90128, Italy; E-Mail: [email protected] * Authors to whom correspondence should be addressed; E-Mails: [email protected] (D.J.); [email protected] (M.S.); Tel.: +34-93-581-1658 (D.J.); +39-091-23897084 (M.S.). Academic Editor: Sergei Odintsov Received: 22 September 2015 / Accepted: 9 November 2015 / Published: 17 November 2015 Abstract: We present a review of two thermal duality symmetries between two different kinds of systems: photons and cosmic string loops, and macro black holes and micro black holes, respectively. It also follows a third joint duality symmetry amongst them through thermal equilibrium and stability between macro black holes and photon gas, and micro black holes and string loop gas, respectively. The possible cosmological consequences of these symmetries are discussed. Keywords: photons; cosmic string loops; black holes thermodynamics; duality symmetry 1. Introduction Thermal duality relates high-energy and low-energy states of corresponding dual systems in such a way that the thermal properties of a state of one of them at some temperature T are related to the properties of a state of the other system at temperature 1=T [1–6]. -
Chapter 22 the Entropy of the Universe and the Maximum Entropy Production Principle
Chapter 22 The Entropy of the Universe and the Maximum Entropy Production Principle Charles H. Lineweaver Abstract If the universe had been born in a high entropy, equilibrium state, there would be no stars, no planets and no life. Thus, the initial low entropy of the universe is the fundamental reason why we are here. However, we have a poor understanding of why the initial entropy was low and of the relationship between gravity and entropy. We are also struggling with how to meaningfully define the maximum entropy of the universe. This is important because the entropy gap between the maximum entropy of the universe and the actual entropy of the universe is a measure of the free energy left in the universe to drive all processes. I review these entropic issues and the entropy budget of the universe. I argue that the low initial entropy of the universe could be the result of the inflationary origin of matter from unclumpable false vacuum energy. The entropy of massive black holes dominates the entropy budget of the universe. The entropy of a black hole is proportional to the square of its mass. Therefore, determining whether the Maximum Entropy Production Principle (MaxEP) applies to the entropy of the universe is equivalent to determining whether the accretion disks around black holes are maximally efficient at dumping mass onto the central black hole. In an attempt to make this question more precise, I review the magnetic angular momentum transport mechanisms of accretion disks that are responsible for increasing the masses of black holes 22.1 The Entropy of the Observable Universe Stars are shining, supernovae are exploding, black holes are forming, winds on planetary surfaces are blowing dust around, and hot things like coffee mugs are cooling down. -
Generic Affinities, Posthumanisms and Science-Fictional Imaginings
GENERIC AFFINITIES, POSTHUMANISMS, SCIENCE-FICTIONAL IMAGININGS SPECULATIVE MATTER: GENERIC AFFINITIES, POSTHUMANISMS AND SCIENCE-FICTIONAL IMAGININGS By LAURA M. WIEBE, B.A., M.A. A Thesis Submitted to the School of Graduate Studies in Partial Fulfilment of the Requirements for the Degree of Doctor of Philosophy McMaster University © Copyright by Laura Wiebe, October 2012 McMaster University DOCTOR OF PHILOSOPHY (2012) Hamilton, Ontario (English and Cultural Studies) TITLE: Speculative Matter: Generic Affinities, Posthumanisms and Science-Fictional Imaginings AUTHOR: Laura Wiebe, B.A. (University of Waterloo), M.A. (Brock University) SUPERVISOR: Professor Anne Savage NUMBER OF PAGES: vi, 277 ii ABSTRACT Amidst the technoscientific ubiquity of the contemporary West (or global North), science fiction has come to seem the most current of genres, the narrative form best equipped to comment on and work through the social, political and ethical quandaries of rapid technoscientific development and the ways in which this development challenges conventional understandings of human identity and rationality. By this framing, the continuing popularity of stories about paranormal phenomena and supernatural entities – on mainstream television, or in print genres such as urban fantasy and paranormal romance – may seem to be a regressive reaction against the authority of and experience of living in technoscientific modernity. Nevertheless, the boundaries of science fiction, as with any genre, are relational rather than fixed, and critical engagements with Western/Northern technoscientific knowledge and practice and modern human identity and being may be found not just in science fiction “proper,” or in the scholarly field of science and technology studies, but also in the related genres of fantasy and paranormal romance. -
Existence Is Evidence of Immortality by Michael Huemer
Existence Is Evidence of Immortality by Michael Huemer Abstract: Time may be infinite in both directions. If it is, then, if persons could live at most once in all of time, the probability that you would be alive now would be zero. Since you are alive now, with certainty, either the past is finite, or persons can live more than once. 1. Overview Do persons continue to exist after the destruction of their bodies? Many believe so. This might occur either because we have immaterial souls that persist in another, non-physical realm; or because our bodies will be somehow reanimated after we die; or because we will live on in new bodies in the physical realm.1 I shall suggest herein that the third alternative, “reincarnation,” is surprisingly plausible. More specifically, I shall argue (i) that your present existence constitutes significant evidence that you will be reincarnated, and (ii) that if the history of the universe is infinite, then you will be reincarnated. My argument is entirely secular and philosophical. The basic line of thought is something like this. The universe has an infinite future. Given unlimited time, every qualitative state that has ever occurred will occur again, infinitely many times. This includes the qualitative states that in fact brought about your current life. A sufficiently precise repetition of the right conditions will qualify as literally creating another incarnation of you. Some theories about the nature of persons rule this out; however, these theories also imply that, given an infinite past, your present existence is a probability-zero event. -
Communications-Mathematics and Applied Mathematics/Download/8110
A Mathematician's Journey to the Edge of the Universe "The only true wisdom is in knowing you know nothing." ― Socrates Manjunath.R #16/1, 8th Main Road, Shivanagar, Rajajinagar, Bangalore560010, Karnataka, India *Corresponding Author Email: [email protected] *Website: http://www.myw3schools.com/ A Mathematician's Journey to the Edge of the Universe What’s the Ultimate Question? Since the dawn of the history of science from Copernicus (who took the details of Ptolemy, and found a way to look at the same construction from a slightly different perspective and discover that the Earth is not the center of the universe) and Galileo to the present, we (a hoard of talking monkeys who's consciousness is from a collection of connected neurons − hammering away on typewriters and by pure chance eventually ranging the values for the (fundamental) numbers that would allow the development of any form of intelligent life) have gazed at the stars and attempted to chart the heavens and still discovering the fundamental laws of nature often get asked: What is Dark Matter? ... What is Dark Energy? ... What Came Before the Big Bang? ... What's Inside a Black Hole? ... Will the universe continue expanding? Will it just stop or even begin to contract? Are We Alone? Beginning at Stonehenge and ending with the current crisis in String Theory, the story of this eternal question to uncover the mysteries of the universe describes a narrative that includes some of the greatest discoveries of all time and leading personalities, including Aristotle, Johannes Kepler, and Isaac Newton, and the rise to the modern era of Einstein, Eddington, and Hawking. -
Book of Abstracts Ii Contents
TeV Particle Astrophysics 2019 Monday, 2 December 2019 - Friday, 6 December 2019 Book of Abstracts ii Contents A Unique Multi-Messenger Signal of QCD Axion Dark Matter ............... 1 The Light Dark Matter eXperiment, LDMX .......................... 1 Why there is no simultaneous detection of Gamma rays and x-rays from x-ray bright galaxy clusters? A hydrodynamical study on the manufacturing of cosmic rays in the evolving dynamical states of galaxy clusters ............................ 1 Mathematical results on hyperinflation ............................ 2 Cuckoo’s eggs in neutron stars: can LIGO hear chirps from the dark sector? . 3 Lensing of fast radio bursts: future constraints on primordial black hole density with an extended mass function and a new probe of exotic compact fermion/ boson stars . 3 Potential dark matter signals at neutrino telescopes ..................... 4 Anomalous 21-cm EDGES Signal and Moduli Dominated Era ................ 4 Precision Measurement of Primary Cosmic Rays with Alpha MAgnetic spectrometer on ISS ................................................ 4 Properties of Secondary Cosmic Ray Lithium, Beryllium and Boron measured with the Alpha Magnetic Spectrometer on the ISS ......................... 5 The Role of Magnetic Field Geometry in the Evolution of Neutron Star Merger Accretion Disks ............................................. 5 Dependence of accessible dark matter annihilation cross sections on the density profiles of dSphs ............................................. 6 Ways of Seeing: Finding BSM physics at the LHC ...................... 6 Probing the Early Universe with Axion Physics ....................... 6 Evidence the 3.5 keV line is not from dark matter decay ................... 7 Global study of effective Higgs portal dark matter models using GAMBIT . 7 Angular power spectrum analysis on current and future high-energy neutrino data . 8 Testing the EWPT of 2HDM at future lepton Colliders .................. -
Publisher's Notice
PUBLISHER’S NOTICE PUBLISHER’S NOTICE This newsletter is the official organ of the New Zealand Mathematical Society Inc. This issue was assembled and printed at Massey University. The official address of the Society is: The New Zealand Mathematical Society, c/- The Royal Society of New Zealand, P.O. Box 598, Wellington, New Zealand. However, correspondence should normally be sent to the Secretary: Dr Shaun Hendy Industrial Research Limited Gracefield Research Centre P O Box 31310, Lower Hutt [email protected] NZMS Council and Officers President Associate Professor Mick Roberts (Massey University, Albany) Outgoing Vice President Professor Rod Downey (Victoria University of Wellington) Secretary Dr Shaun Hendy (Industrial Research Limited, Lower Hutt) Treasurer Dr Tammy Smith (Massey University) Councillors Dr Michael Albert (University of Otago), to 2006 Dr Shaun Hendy (Industrial Research Limited), to 2004 Professor Gaven Martin (The University of Auckland), to 2005 Dr Warren Moors (The University of Auckland), to 2006 Dr Charles Semple (University of Canterbury), to 2005 Dr Tammy Smith (Massey University, Palmerston North), to 2005 Professor Geoff Whittle (Victoria University of Wellington), to 2004 Membership Secretary Dr John Shanks (University of Otago) Newsletter Editor Professor Robert McLachlan (Massey University, Palmerston North) Legal Adviser Dr Peter Renaud (University of Canterbury) Archivist Emeritus Professor John Harper (Victoria University of Wellington) Visitor Liaison Dr Stephen Joe (The University of Waikato) Publications Convenor -
Report and Opinion 2016;8(6) 1
Report and Opinion 2016;8(6) http://www.sciencepub.net/report Beyond Einstein and Newton: A Scientific Odyssey Through Creation, Higher Dimensions, And The Cosmos Manjunath R Independent Researcher #16/1, 8 Th Main Road, Shivanagar, Rajajinagar, Bangalore: 560010, Karnataka, India [email protected], [email protected] “There is nothing new to be discovered in physics now. All that remains is more and more precise measurement.” : Lord Kelvin Abstract: General public regards science as a beautiful truth. But it is absolutely-absolutely false. Science has fatal limitations. The whole the scientific community is ignorant about it. It is strange that scientists are not raising the issues. Science means truth, and scientists are proponents of the truth. But they are teaching incorrect ideas to children (upcoming scientists) in schools /colleges etc. One who will raise the issue will face unprecedented initial criticism. Anyone can read the book and find out the truth. It is open to everyone. [Manjunath R. Beyond Einstein and Newton: A Scientific Odyssey Through Creation, Higher Dimensions, And The Cosmos. Rep Opinion 2016;8(6):1-81]. ISSN 1553-9873 (print); ISSN 2375-7205 (online). http://www.sciencepub.net/report. 1. doi:10.7537/marsroj08061601. Keywords: Science; Cosmos; Equations; Dimensions; Creation; Big Bang. “But the creative principle resides in Subaltern notable – built on the work of the great mathematics. In a certain sense, therefore, I hold it astronomers Galileo Galilei, Nicolaus Copernicus true that pure thought can