Supersymmetry Definition and 124 Threads

  1. E

    Could you have BOTH mirror matter and supersymmetry?

    I know that mirror symmetry resulting in mirror matter and supersymmetry resulting in SUSY partners are two completely distinct fields, and that the original bosonic string theory needs SUSY to get fermions. If mirror matter does exist in the universe, what would this mean in terms of SUSY...
  2. atyy

    String Theory and Supersymmetry

    Cargese lectures on string theory with eight supercharges Monica Guica, Andrew Strominger http://arxiv.org/abs/0704.3295 The authors state "Ultimately the most interesting and most physically relevant case is no supersymmetry at all. But at the moment analytic control in this case is quite...
  3. S

    Supersymmetry notation question

    In super yang mills theories in 4,6,10 dimensions, the supersymmetry transformation is often written as (ignoring color indices): \delta A_\mu = i \bar \alpha \gamma_\mu \lambda - i \bar \lambda \gamma_\mu \alpha \delta \lambda = c F^{\mu \nu} [ \gamma_\mu, \gamma_\nu] \alpha where c is...
  4. J

    Higgs particle, supersymmetry and dark matter.

    Could someone help explain how these are related? I kind of understand the Higgs particle/field. It is believed to be the reason why fundamental particles (fermions and bosons) have mass. So, then I read that one of the problems with the Higgs field is that if it is true things should be...
  5. J

    Falsifiable predicted consequences of SuperSymmetry?

    What are some falsifiable predicted consequences of SuperSymmetry? Clearly, if super particles are found, people can rejoice in this new fundamental knowledge of nature. But if it turns out to be a incorrect alley that some theorists journeyed down, do we at least have a way to prove this to...
  6. Jim Kata

    N = 4 supersymmetry & Pati Salam

    I was reading a little bit about N = 4 SUSY, and I couldn't help but think that it's like the Pati Salam GUT. To get an N = 4 SUSY theory you can take SO(1,9) and compactify it to four dimensions. In doing so, you get Spin(1,3)XSU(4), where SU(4) is the R symmetry of the theory and Spin(1,3)...
  7. G

    Could Supersymmetry Explain Dark Matter?

    Hello: I`ve heard that supersymmetry predicts new fundamental particles that may explain dark matter, and that dark matter and dark energy is 95 percent of the total mass of the universe... What are these fundamental particles predicted by supersymmetry?, and how...
  8. G

    Supersymmetry and String Theory

    I am reading Michael Hines new book, Supersymmetry and String Theory. He keeps referring to "tree-level". What is this?
  9. malawi_glenn

    Is Supersymmetry the Future of Particle Physics?

    http://www-thphys.physics.ox.ac.uk/users/IanAitchison/susy.pdf http://www.cpt.dur.ac.uk/~georg/ss/ss.htm
  10. E

    Supersymmetry: Understanding Weinberg's Formula on Page 78

    Greetings everyone, I have to give a lecture about supersymmetry, so I started reading Weinbergs quantum theory of fields vol 3, which is quite of a task. Sometimes I've trouble with some of his conclusions, and I hope you could help me there. I really do not understand how he got to the...
  11. Demystifier

    LHC, supersymmetry and strings

    One of the things that LHC will experimentally search for are supersymmetric partners of the Standard-Model particles. Maybe it will found them, maybe it will not. But what if it will? The existence of supersymmetry does not imply the existence of superstrings. However, string theory is...
  12. A

    Solving Supersymmetry Q: U_R(1) Symmetry & theta*Q

    Hi I have a question concerning the anticommuting variable theta of the superspace manifold: For a proof of some renormalisation theorems I have seen the author make use of the transformation properties of theta under the internal U_R(1) symmetry i.e. he said theta -> exp(-i alpha)*theta ,under...
  13. A

    Does Supersymmetry Breaking Compromise Poincare Invariance?

    I recently studied supersymmetry breaking and read there that for Supersymmetry breaking we have the energy of the vacuum state >0. However what I do not really see is why such a vacuum would not break Poincare invariance as well as the energy is part of the momentum 4-vector and so transforms...
  14. A

    Solving Exercise I.2 on Supersymmetry Algebras

    Not sure if this is something you'd put in the homework help area or not, but I've started learning supersymmetry and seem to have hit a bump within the first few pages. \delta_{\lambda}\varphi = \frac{1}{2}\lambda^{\mu\nu}M_{\mu\nu}.\varphi for some field \varphi, which is one of S, P or...
  15. S

    Teaching myself supersymmetry and supergravity

    Hi, I am interested in teaching myself supersymmetry and supergravity. I have a decent qft background. I know of several good online notes,, but what I really need is a source of good problems. Anybody know where I can find such a source? Does the Wess and Bagger book have good problems...
  16. S

    Unraveling Supersymmetry: Questions and Evidence in Modern Physics

    These are questions for anyone who understands the modern theory of supersymmetry. I have recently read some articles on supersymmetry and its capacity to unify the forces of nature, along with providing a better explanation on the arisal of the higgs mechanism. Q1: Fermions and bosons are...
  17. G

    How do I find the hermitian conjugate of this expression?

    Hi, I'm trying to do problem 3.5 of Peskin & Schroeder and I don't know where to start. First of all, I need to get the hermitian conjugate of the following expression \delta \chi = \epsilon F + \sigma^\mu \partial_\mu \phi \sigma^2 \epsilon^\ast where \epsilon is a 2...
  18. F

    What is Supersymmetry and How is it Used in Physics?

    Hello, My first post in the forums so please excuse me if there is already a post on this (I couldn't find one). I am not very technical in physics so can you please use simple language :shy: . I am not entirely sure on the concept of supersymmetry, I know stuff like partner of an...
  19. ZapperZ

    Supersymmetry, Extra Dimensions, and Higgs Bosons

    OK, this is so unlike me to advertize a theory activity on Supersymmetry, etc. But as a community service, I thought I should point out to those who are interested, that the Argonne Theory Institute will be starting it's Theory Institute 2005 workshop titled "Supersymmetry, Extra Dimensions, and...
  20. S

    A Brand New Idea in Supersymmetry

    Aaron Bergman has just called attention on science.strings to the new paper hep-th/0503249 which discusses the new idea of "split supersymetry". From the abstract: I don't know if this messes up current plans at Fermilab and CERN for hunting the Higgs. but it does look like it could give...
  21. D

    Supersymmetry and Superparticles

    In a nutshell, could someone refresh my memory on supersymmetry and superparticles. I have trouble understanding these subjects of string theory. Let's say we have a fermonic string of spin -1\2. What is it's superparticle's spin? Is it bosonic? Thanks to all
  22. U

    Unmesh Kamle: 17 Year Old Discussing Potential Wells and Supersymmetry

    My name is Unmesh Kamle. I have just passed high school and began reading about Potential wells and about electrons trapped inside them (from Resnick Halliday Krane). I m also reading about Supersymmetry. I m new member on this discussion forum. Could somebody reply to this message so that I can...
  23. J

    String Theory and Supersymmetry in Theoretical Physics Curriculum

    I'm sorry marcus, but as you probably know by now, familiarity with the main ideas of string theory and supersymmetry is pretty much mandatory for all students planning to go into theoretical physics, so courses in strings and supersymmetry continue to be a standard part of college syllubi (in...
  24. S

    The Mysteries of Supersymmetry: A Comprehensive Thesis Guide

    i am writting a thesis in supersymmetry if someone help me please
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