35,977 research outputs found

    Dimension Four Wins the Same Game as the Standard Model Group

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    In a previous article Don Bennett and I looked for,found and proposed a game in which the Standard Model group S(U(2)XU(3)) gets singled out as the "winner". Here I propose to extend this "game" to construct a corresponding game between different potential dimensions for space time. The idea is to formulate how the same competition as the one between the potential gauge groups would run out, if restricted to the potential Lorentz or Poincare groups achievable for different dimensions of space time d. The remarkable point is that it is the experimental dimension of space time 4 which wins. So the same function defined over Lie groups seems to single out both the gauge group and the space time dimension in nature. This seems a rather strange coincidence unless there is really some similar physics behind.Comment: After introducing some more review o the previous article the historical stuff was moved into an appendi

    String from Veneziano model

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    This article is about my memories from the discovery that the Veneziano model describes in fact interacting strings. I came to the understanding of that the dual or Veneziano model is really a model of strings independently of L. Susskind and Y. Nambu. A characteristic feature of my approach was that I used thinking of very high order "fishnet" or planar Feynman diagrams as the way of at first describing the development of the strings. A chain of constituents leads to planar diagrams dominating when only neighbours on the chain interact significantly. The article also mentions the works of Ziro Koba and mine about extending the Veneziano model first to five external particles - as Bardakci and Ruegg, Chan Tsou, and Goebel and Sakita also did - and subsequently to an arbitrary number n of external mesons.Comment: 10 pages, contribution to Conference "The Birth of String Theory" by Filippo iColomo et al. in Firenze 200

    Initial Condition Model from Imaginary Part of Action and the Information Loss

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    We review slightly a work by Horowitz and Maldecena solving the information loss problem for black holes by having inside the blackhole - near to the singularity - a boundary condition, as e.g the no boundary proposal by Hartle and Hawking. Here we propose to make this boundary condition come out of our imaginary action model (together with Masao Ninomiya). This model naturally begins effectively to set up boundaries - whether it be in future or past! - especially strongly whenever we reach to high energy physics regimes, such as near the black hole singularity, or in Higgs producing machines as LHC or SSC. In such cases one can say our model predicts miracles. The point is that you may say that the information loss problem, unless you solve it in other ways, call for such a violation of time causality as in our imaginary action model!Comment: Proceedings to ``Black Holes in General Relativity and String Theory'' in Veli Losjinj, Chroati

    Search for Effect of Influence from Future in Large Hadron Collider

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    We propose an experiment which consists of drawing a card and using it to decide restrictions on the running of Large Hadron Collider (LHC for short) at CERN, such as luminosity, and beam energy. There may potentially occur total shut down. The purpose of such an experiment is to search for influence from the future, that is, backward causation. Since LHC will produce particles of a mathematically new type of fundamental scalars, i.e., the Higgs particles, there is potentially a chance to find unseen effects, such as on influence going from future to past, which we suggest in the present paper.Comment: 18pp, comments added, change of title and corrections of main text; v4:minor typos correcte

    Ginsparg-Wilson Relation and Ultralocality

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    It is shown that it is impossible to construct a free theory of fermions on infinite hypercubic Euclidean lattice in four dimensions that is: (a) ultralocal, (b) respects symmetries of hypercubic lattice, (c) corresponding kernel satisfies D gamma5 + gamma5 D = D gamma5 D (Ginsparg-Wilson relation), (d) describes single species of massless Dirac fermions in the continuum limit.Comment: 4 pages, REVTEX; few minor change

    Gravitational Lorentz anomaly from the overlap formula in 2-dimensions

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    In this letter we show that the overlap formulation of chiral gauge theories correctly reproduces the gravitational Lorentz anomaly in 2-dimensions. This formulation has been recently suggested as a solution to the fermion doubling problem on the lattice. The well known response to general coordinate transformations of the effective action of Weyl fermions coupled to gravity in 2-dimensions can also be recovered.Comment: 7 pages, late
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