Introduction to Lattice Field Theory
... Outline The path integral and the renormalization group The path integral formulation Field theory, divergences, renormalization Example 1: the central limit theorem Example 2: the Ising model Example 3: scalar field theory Bosons on the lattice ...
... Outline The path integral and the renormalization group The path integral formulation Field theory, divergences, renormalization Example 1: the central limit theorem Example 2: the Ising model Example 3: scalar field theory Bosons on the lattice ...
slides - Frontiers of Fundamental Physics (FFP14)
... On the Relation Betweeen Gauge and Phase Symmetries Gabriel Catren Laboratoire SPHERE - Sciences, Histoire, Philosophie (UMR 7219) - Université Paris Diderot/CNRS ERC Project Philosophy of Canonical Quantum Gravity ...
... On the Relation Betweeen Gauge and Phase Symmetries Gabriel Catren Laboratoire SPHERE - Sciences, Histoire, Philosophie (UMR 7219) - Université Paris Diderot/CNRS ERC Project Philosophy of Canonical Quantum Gravity ...
- Free Documents
... of work that followed, it became clear that a useful framework for under standing this situation is Atiyahs axiomatic description of a topological quantum eld theory, or TQFT. On the other hand, at about the same time as Jones initial discov ery, Ashtekar discovered a reformulation of general relati ...
... of work that followed, it became clear that a useful framework for under standing this situation is Atiyahs axiomatic description of a topological quantum eld theory, or TQFT. On the other hand, at about the same time as Jones initial discov ery, Ashtekar discovered a reformulation of general relati ...
Phenomenology of Higgs Bosons Beyond the Standard Model
... A commonly studied extension of the SM is the framework of two-Higgs-doublet models (2HDMs), where there are ve Higgs bosons. By confronting the parameter spaces of some 2HDMs with publically available data from the LHC, the prospects for nding the 2HDM Higgs bosons is presented through the calcul ...
... A commonly studied extension of the SM is the framework of two-Higgs-doublet models (2HDMs), where there are ve Higgs bosons. By confronting the parameter spaces of some 2HDMs with publically available data from the LHC, the prospects for nding the 2HDM Higgs bosons is presented through the calcul ...
Grand Unified Models and Cosmology
... Also, which process(es) lead to the baryon asymmetry of the universe? Which process(es) can predict the small ratio η? What is the nature of the dark-matter of the universe? How can the CBR look the same in all directions [16] when it comes from causally disconnected regions of space? This is referr ...
... Also, which process(es) lead to the baryon asymmetry of the universe? Which process(es) can predict the small ratio η? What is the nature of the dark-matter of the universe? How can the CBR look the same in all directions [16] when it comes from causally disconnected regions of space? This is referr ...
Contents
... cornerstone of gauge theories, is a stricter constraint. Local gauge symmetries can be viewed as analogues of the equivalence principle of general relativity in which at each point in space-time is allowed a choice of a local reference (coordinate) frame local Lorenz invariance. Both symmetries refl ...
... cornerstone of gauge theories, is a stricter constraint. Local gauge symmetries can be viewed as analogues of the equivalence principle of general relativity in which at each point in space-time is allowed a choice of a local reference (coordinate) frame local Lorenz invariance. Both symmetries refl ...
Beyond the Standard Model
... The first version of these notes was written up for lectures at the 1995 AIO-school (a school for PhD students) on theoretical particle physics. Later they were adapted for lectures at the Radboud University in Nijmegen, aimed at undergraduate students in their fourth year. This means that no detail ...
... The first version of these notes was written up for lectures at the 1995 AIO-school (a school for PhD students) on theoretical particle physics. Later they were adapted for lectures at the Radboud University in Nijmegen, aimed at undergraduate students in their fourth year. This means that no detail ...
The Standard Model of particle physics and beyond.
... Euler-Lagrange equations - theoretical concepts. We consider a set of fields φ(x µ ). ...
... Euler-Lagrange equations - theoretical concepts. We consider a set of fields φ(x µ ). ...
String Theory - damtp - University of Cambridge
... scalar fields and chiral fermions. In other words, it contains all the ingredients that make up our universe. It also gives the only presently credible explanation for the value of the cosmological constant although, in fairness, I should add that the explanation is so distasteful to some that the c ...
... scalar fields and chiral fermions. In other words, it contains all the ingredients that make up our universe. It also gives the only presently credible explanation for the value of the cosmological constant although, in fairness, I should add that the explanation is so distasteful to some that the c ...
15. GRAND UNIFIED THEORIES 15. Grand Unified Theories 15.1. Grand Unification 1
... Finally, larger symmetry groups have been considered. For example, E(6) has a fundamental representation 27, which under SO(10) transforms as a [16 + 10 + 1]. The breaking pattern E(6) → SU(3)C × SU(3)L × SU(3)R is also possible. With the additional permutation symmetry Z(3) interchanging the three ...
... Finally, larger symmetry groups have been considered. For example, E(6) has a fundamental representation 27, which under SO(10) transforms as a [16 + 10 + 1]. The breaking pattern E(6) → SU(3)C × SU(3)L × SU(3)R is also possible. With the additional permutation symmetry Z(3) interchanging the three ...
Little Higgs dark matter and its collider signals
... Single T+ production occurs not through a QCD process but through a EW process (e.g. W-exchange). Distributions have distinguishable peaks at around the T+ mass when sin2β is large enough! From the cross section, we will be able to determine sinβ. ...
... Single T+ production occurs not through a QCD process but through a EW process (e.g. W-exchange). Distributions have distinguishable peaks at around the T+ mass when sin2β is large enough! From the cross section, we will be able to determine sinβ. ...
Non-linear field theory with supersymmetry
... with relativistic fluid mechanics and its supersymmetric extension. Relativistic fluid mechanics has applications in the laboratory, e.g. in plasma physics and heavy ion collisions, as well as in astrophysics and cosmology [10, 11]. As it is also believed to provide a more accurate description of hy ...
... with relativistic fluid mechanics and its supersymmetric extension. Relativistic fluid mechanics has applications in the laboratory, e.g. in plasma physics and heavy ion collisions, as well as in astrophysics and cosmology [10, 11]. As it is also believed to provide a more accurate description of hy ...
Linear Collider - University of Victoria
... symmetry breaking and physics beyond the Standard Model that cannot be answered without a physics program at a Linear Collider overlapping that of the Large Hadron Collider. We therefore strongly recommend the expeditious construction of a Linear Collider as the next major international High Energy ...
... symmetry breaking and physics beyond the Standard Model that cannot be answered without a physics program at a Linear Collider overlapping that of the Large Hadron Collider. We therefore strongly recommend the expeditious construction of a Linear Collider as the next major international High Energy ...
Gauge fixing
In the physics of gauge theories, gauge fixing (also called choosing a gauge) denotes a mathematical procedure for coping with redundant degrees of freedom in field variables. By definition, a gauge theory represents each physically distinct configuration of the system as an equivalence class of detailed local field configurations. Any two detailed configurations in the same equivalence class are related by a gauge transformation, equivalent to a shear along unphysical axes in configuration space. Most of the quantitative physical predictions of a gauge theory can only be obtained under a coherent prescription for suppressing or ignoring these unphysical degrees of freedom.Although the unphysical axes in the space of detailed configurations are a fundamental property of the physical model, there is no special set of directions ""perpendicular"" to them. Hence there is an enormous amount of freedom involved in taking a ""cross section"" representing each physical configuration by a particular detailed configuration (or even a weighted distribution of them). Judicious gauge fixing can simplify calculations immensely, but becomes progressively harder as the physical model becomes more realistic; its application to quantum field theory is fraught with complications related to renormalization, especially when the computation is continued to higher orders. Historically, the search for logically consistent and computationally tractable gauge fixing procedures, and efforts to demonstrate their equivalence in the face of a bewildering variety of technical difficulties, has been a major driver of mathematical physics from the late nineteenth century to the present.