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Open: Postdoc Position at the Massachusetts Institute of Technology
Open: Postdoc Position at the Massachusetts Institute of Technology

ppt
ppt

Determination of the Boltzmann Constant Using the Differential
Determination of the Boltzmann Constant Using the Differential

... a global QKD network by using satellites [2] in Low Earth Orbit (LEO) to transmit quantum states of light through an optical link. For discrete variable QKD employing polarization entangled photons, single photon sources and detectors can be carried on a satellite. The first step in this direction i ...
Chern-Simons Inflation and Baryogenesis?
Chern-Simons Inflation and Baryogenesis?

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Gonzalez-MestresPreBigBang

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J.M. Maldacena

... • One can define inclusive, event shape variables for conformal theories • They can be computed at weak and strong coupling • Small angle features governed by the anomalous dimension of twist two operators • Events are more spherically symmetric at strong coupling, but not completely uniform. • In a ...
Cosmology - RHIG - Wayne State University
Cosmology - RHIG - Wayne State University

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Testing Lorentz Invariance in High-Energy

Hadron resonance gas models
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BHs and effective quantum gravity approaches
BHs and effective quantum gravity approaches

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pptx,6Mb - ITEP Lattice Group

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ASTRONOMY 5
ASTRONOMY 5

... not clear whether all versions, or just some, or even just one, are suitable for making universes. Some people believe that only one theory will be viable, i.e., that there is only one self-consistent way to make a universe, but this is not universally held. 4) String theory and cosmology: There is ...
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Neutrino Oscillations: A Logical Argument for Them

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Physics 141 Mechanics Yongli Gao Lecture 4 Motion in 3-D

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Report: Revising the `Solar neutrino problem`

... Neutrino oscillation predicts neutrinos are produced with one of three lepton flavours and can later be measured to have a different flavour. As the original experiments were not engineered to detect all three flavours, the observed number was typically one third to one half of the predicted number. ...
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What`s Inside the Neutron?

The relation of colour charge to electric charge (E/c) −P2 −Q2 −(mc
The relation of colour charge to electric charge (E/c) −P2 −Q2 −(mc

... Mechanics, 4th edition (Oxford University Press) ISBN 0-19-852011-5] This can also be done using 2x2 Pauli matrices (labelled K,L,M) because two inertial observers agree on the component of momentum Q orthogonal to the component of momentum P in the direction of a Lorentz boost. ...
Strong Electroweak Symmetry Breaking
Strong Electroweak Symmetry Breaking

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quiz

Joint Lecture Groningen
Joint Lecture Groningen

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eq04

... object  Law of Conservation of Linear Momentum  F  0  p  0  p1  p2 initial momentum = final momentum In an isolated system (zero net force acting) then in any collisions or explosions within the system, momentum is conserved psystem  0 Beta decay - electron e- or positron e+ released from ...
Our bodies are made of neutrons, protons and electrons
Our bodies are made of neutrons, protons and electrons

... that hadrons have a net integer electric charge. Another property of hadrons is that they have no net color charge even though the quarks themselves carry color charge (we will try to talk more about this later if we have time). Hadrons have no net strong charge (or color charge) but they do have re ...
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Grand Unified Theory

A Grand Unified Theory (GUT) is a model in particle physics in which at high energy, the three gauge interactions of the Standard Model which define the electromagnetic, weak, and strong interactions or forces, are merged into one single force. This unified interaction is characterized by one larger gauge symmetry and thus several force carriers, but one unified coupling constant. If Grand Unification is realized in nature, there is the possibility of a grand unification epoch in the early universe in which the fundamental forces are not yet distinct.Models that do not unify all interactions using one simple Lie group as the gauge symmetry, but do so using semisimple groups, can exhibit similar properties and are sometimes referred to as Grand Unified Theories as well.Unifying gravity with the other three interactions would provide a theory of everything (TOE), rather than a GUT. Nevertheless, GUTs are often seen as an intermediate step towards a TOE.The novel particles predicted by GUT models are expected to have energies around the GUT scale—just a few orders of magnitude below the Planck scale—and so will be well beyond the reach of any foreseen particle collider experiments. Therefore, the particles predicted by GUT models will be unable to be observed directly and instead the effects of grand unification might be detected through indirect observations such as proton decay, electric dipole moments of elementary particles, or the properties of neutrinos. Some grand unified theories predict the existence of magnetic monopoles.As of 2012, all GUT models which aim to be completely realistic are quite complicated, even compared to the Standard Model, because they need to introduce additional fields and interactions, or even additional dimensions of space. The main reason for this complexity lies in the difficulty of reproducing the observed fermion masses and mixing angles. Due to this difficulty, and due to the lack of any observed effect of grand unification so far, there is no generally accepted GUT model.
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