• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
20071031110012301
20071031110012301

...  World-sheet scattering and S-matrix  Near-flat-space limit ...
The Search for Unity: Notes for a History of Quantum Field Theory
The Search for Unity: Notes for a History of Quantum Field Theory

... can and Planck's constant, be interpreted as the state of a single photon with that energy. The next state would have an energy twice as great, and therefore would be interpreted as containing two photons of the same energy. And so on. to the electromagnetic the application of quantum mechanics fiel ...
Field Theory and Standard Model
Field Theory and Standard Model

... The standard model of particle physics has the following key features: • As a theory of elementary particles, it incorporates relativity and quantum mechanics, and therefore it is based on quantum field theory. • Its predictive power rests on the regularisation of divergent quantum corrections and th ...
Neutrino mass and New Physics: Facts and Fancy
Neutrino mass and New Physics: Facts and Fancy

...  The investigation of lepton and baryon numbers can be regarded as an entrance door to new physics  Majorana’s hypothesis on the nature of neutrino mass falls into this class: 0n2b = creation of electrons  There are a few principles and ideas to build a convincing theory that extends the SM and e ...
Authors:Qing Jie, Rongwei Hu, Emil Bozin, A
Authors:Qing Jie, Rongwei Hu, Emil Bozin, A

... Abstract: We investigate Josephson currents in mesoscopic rings with a weak link which are in or near a topological superconducting phase. As a paradigmatic example, we consider the Kitaev model of a spinless p-wave superconductor in one dimension, emphasizing how this model emerges from more realis ...
A Solution to the Li Problem by the Long Lived Stau
A Solution to the Li Problem by the Long Lived Stau

... We are interesting to relic density of NLSP Obviously we can not use the method ! We must solve numerically a coupled set of differential Eq. for stau and neutralino ...
Discovery of the Higgs Particle
Discovery of the Higgs Particle

... propagate through that region. In our Universe, the equilibrium value of the Higgs field is at some point, where the W, Z, and basic matter particles all have nonzero masses. But for some special value of the Higgs field, the W and Z particles would have zero mass (as would all the Standard Model ma ...
Higgs colloquium - High Energy Physics
Higgs colloquium - High Energy Physics

... different types of particles Electrons and muons ...
LHC - Università di Pisa
LHC - Università di Pisa

...  Transverse momentum, pT  Particles that escape detection (<3o) have pT≈0 ...
Plain text version - FCC Week 2016
Plain text version - FCC Week 2016

... The Future Circular Collider study (FCC) explores different designs of circular colliders for the postLHC era. The FCC collaboration will deliver a conceptual design report by the end of 2018, together with preliminary cost estimates and feasibility assessments that will lay the foundations for the ...
Reply to" Comment on" Galilean invariance at quantum Hall edge""
Reply to" Comment on" Galilean invariance at quantum Hall edge""

... as a variation of the action with respect to the gauge field (see Eq. (46) in [1]). In our construction, however, the velocity should not be considered independent, since it is a function of the electromagnetic field satisfying Eq. (5). Taking this into account and going through the same steps as in ...
Electroweak precision data and right-handed gauge bosons
Electroweak precision data and right-handed gauge bosons

... be given by the model itself rather than having to be put by hand, then we need to seek a more fundamental theory which will reduce to the standard model at present energies. To do so, we construct new theories and models, such as left-right symmetric models [1]. Experimentally, we try also to detec ...
Graduate Course Descriptions - UC Berkeley Physics
Graduate Course Descriptions - UC Berkeley Physics

... week. Prerequisites: Major in physical science such as chemistry, physics, etc., or engineering; consent of advisor or instructor. A three-module introduction to the fundamental topics of Nano-Science and Engineering (NSE) theory and research within chemistry, physics, biology, and engineering. This ...
What is Renormalization? G.Peter Lepage
What is Renormalization? G.Peter Lepage

... As everyone knows the quantized theory of electrodynamics was created in the late 1920’s and early 1930’s. The theory was analyzed in perturbation theory, and was quite successful to leading order in the fine-structure constant α. However all sorts of infinities started to appear in calculations bey ...
Measurement of the neutron lifetime with ultra
Measurement of the neutron lifetime with ultra

... experiments [4–7], which “fix” θ13 independently of δ. Some (weaker) information on such a fundamental phase is also provided by atmospheric neutrinos [8]. Quite intriguingly, all the latest global analyses [9–11] show a weak indication (close to the 90% C.L.) of CPV, the best fit value of the CP-ph ...
2014 version - Elementary Particle Physics @ Birmingham
2014 version - Elementary Particle Physics @ Birmingham

... he European Laboratory for Particle Physics (CERN), hosts a unique arrangement of interlocking particle accelerators. Each of the lower-energy machines delivers particles that are either used directly in experimental studies, or are accelerated further by a more-powerful machine. The highest-energy ...
Were Bohr and Einstein both right
Were Bohr and Einstein both right

... Universal Semantic Computation is Quantum Mechanical and must be nilpotent • Moreover this phenomena of the quantum vacuum, which cannot itself be measured, is now explained, because in the urs it constitutes the measurement standard for the whole universe and so quite logically there is nothing fu ...
The Discovery of Dirac Equation and its Impact on Present
The Discovery of Dirac Equation and its Impact on Present

... In 1937, Majorana introduced the idea of a particle satisfying the Dirac equation, but having its antiparticle the same as itself. This is the self-conjugate fermion. Such particles may exist in nature. A possible candidate is the neutrino. Is the neutrino identical to the antineutrino? We do not kn ...
Electroweak Interactions : Neutral currents in neutrino`lepton elastic
Electroweak Interactions : Neutral currents in neutrino`lepton elastic

... photon . The gauge group, SU(2)L U(1)Y , must therefore have four generators : however, gauge invariance relates interactions to massless bosons only. The fact that the (W+ ; W ;Z0 ) bosons mediating the weak force are massive (and the fact that we want a renormalizable theory) required to include a ...
Symmetry Principles and Conservation Laws in Atomic and
Symmetry Principles and Conservation Laws in Atomic and

... the most gifted minds today. These topics require a deep and extensive understanding of both `quantum mechanics' and the `theory of relativity'. We attempt in this pedagogical article to present a heuristic understanding of these fascinating relationships based only on rather elementary consideratio ...
Nucleosynthesis and the time dependence of
Nucleosynthesis and the time dependence of

... present) in the dilaton expectation value (in the context of string gravity) due to its effect on standard model parameters such as gauge and Yukawa couplings as well as &o and the Higgs expectation value from big ban8 nucleosynthcsis. The induced variation in the latter two quantities (noting that ...
Untitled - College of William and Mary
Untitled - College of William and Mary

... models similar to the original model. In particular, if these holographic models offer a compelling description of high-temperature superconductivity - that is, if high-temperature superconducting behavior is a result of holographic effects - then these models should predict the same value for the s ...
A short history of fractal-Cantorian space-time
A short history of fractal-Cantorian space-time

... If we project the space-time of vacuum fluctuation on a Poincaré circle we will see a hyperbolic tessellation of this circle with predominantly Klein-curve-like geometry. This is an important  part of El Naschie’s thesis that actual quantum spacetime strongly resembles the hyperbolic geometry of th ...
Large Extra Dimensions - Are you sure you want to look at this?
Large Extra Dimensions - Are you sure you want to look at this?

... idea, something amazing happened. The believed fundamental scale of nature where gravity becomes as strong as the gauge interactions, the Planck scale MPl = GN-1/2 ≈ 1016 TeV (6), turns out to not be fundamental at all. In fact, the real fundamental Planck scale in (4 + n) dimensions could be as sma ...
instructions for the preparation of contributions to cern reports
instructions for the preparation of contributions to cern reports

... Quarks and leptons are grouped in three families. The particles in the different families have identical charges, but differ in mass (Figure 2.2). The first family contains the electron and the electrically neutral electron-neutrino as leptons as well as the up- and down-quarks. Upquarks carry charg ...
< 1 ... 8 9 10 11 12 13 14 15 16 ... 39 >

Supersymmetry

Supersymmetry (SUSY), a theory of particle physics, is a proposed type of spacetime symmetry that relates two basic classes of elementary particles: bosons, which have an integer-valued spin, and fermions, which have a half-integer spin. Each particle from one group is associated with a particle from the other, known as its superpartner, the spin of which differs by a half-integer. In a theory with perfectly ""unbroken"" supersymmetry, each pair of superpartners would share the same mass and internal quantum numbers besides spin. For example, there would be a ""selectron"" (superpartner electron), a bosonic version of the electron with the same mass as the electron, that would be easy to find in a laboratory. Thus, since no superpartners have been observed, if supersymmetry exists it must be a spontaneously broken symmetry so that superpartners may differ in mass. Spontaneously-broken supersymmetry could solve many mysterious problems in particle physics including the hierarchy problem. The simplest realization of spontaneously-broken supersymmetry, the so-called Minimal Supersymmetric Standard Model, is one of the best studied candidates for physics beyond the Standard Model.There is only indirect evidence and motivation for the existence of supersymmetry. Direct confirmation would entail production of superpartners in collider experiments, such as the Large Hadron Collider (LHC). The first run of the LHC found no evidence for supersymmetry (all results were consistent with the Standard Model), and thus set limits on superpartner masses in supersymmetric theories. Whilst many remain enthusiastic about supersymmetry, this first run at the LHC led some physicists to explore other ideas. In any case, in 2015 the LHC resumed its search for supersymmetry and other new physics in its second run.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report