Solving quantum field theories via curved spacetimes
... terms of particles locally splitting or joining with other particles. Yet in many interesting physical problems, the coupling is so strong that such an expansion is not feasible. To further complicate matters, the coupling typically depends on the characteristic energy of a process. In QCD, perturba ...
... terms of particles locally splitting or joining with other particles. Yet in many interesting physical problems, the coupling is so strong that such an expansion is not feasible. To further complicate matters, the coupling typically depends on the characteristic energy of a process. In QCD, perturba ...
ASTRONOMY 5
... 2) Eternal inflation is an alternative theory that does away with “the beginning” entirely. This theory was invented by the Russian cosmologist Andre Linde in 1982 as an elaboration of Guth’s original inflation picture. A benefit is that the theory sidesteps the Planck time. Highly speculative, but ...
... 2) Eternal inflation is an alternative theory that does away with “the beginning” entirely. This theory was invented by the Russian cosmologist Andre Linde in 1982 as an elaboration of Guth’s original inflation picture. A benefit is that the theory sidesteps the Planck time. Highly speculative, but ...
The Dimensions of M
... The first step of deriving General Relativity and particle physics from a common fundamental source may lie within the quantization of the classical string action. At a given momentum, quantized strings exist only at discrete energy levels, each level containing a finite number of string states, or ...
... The first step of deriving General Relativity and particle physics from a common fundamental source may lie within the quantization of the classical string action. At a given momentum, quantized strings exist only at discrete energy levels, each level containing a finite number of string states, or ...
The dangers of non-empirical confirmation
... The reason only empirical evidence can grant “confirmation” in the common sense of the word, is crucial and important: we all tend to be blinded by our beliefs. We pile up non-empirical arguments in support these. The historical success of science is grounded in the readiness to give up beloved beli ...
... The reason only empirical evidence can grant “confirmation” in the common sense of the word, is crucial and important: we all tend to be blinded by our beliefs. We pile up non-empirical arguments in support these. The historical success of science is grounded in the readiness to give up beloved beli ...
by Margaret L. Silbar
... welcome the possibilities being opened up by the theory of superstrings. They hope that understanding of root phenomena and concepts will grow as dramatically as it did at the birth of quantum mechanics in the 1920s. That was when the paradigm of light as wave motion was replaced by the model of lig ...
... welcome the possibilities being opened up by the theory of superstrings. They hope that understanding of root phenomena and concepts will grow as dramatically as it did at the birth of quantum mechanics in the 1920s. That was when the paradigm of light as wave motion was replaced by the model of lig ...
A unique theory of all forces 1 The Standard Model and Unification
... at high energy, but it is also required for other reasons that we cannot here fully discuss. Because of them it is believed, but far from proved, that at an energy of the order of the electro-weak scale the standard model has to be modified to include supersymmetry. Supersymmetry generalizes the Lor ...
... at high energy, but it is also required for other reasons that we cannot here fully discuss. Because of them it is believed, but far from proved, that at an energy of the order of the electro-weak scale the standard model has to be modified to include supersymmetry. Supersymmetry generalizes the Lor ...
Unruh Effect in Closed String Theory
... in Minkowski Space-time. If we can represent the solution of Klein-Gordon eq. in Rindler space-time by the combination of the solutions of Klein-Gordon eq. in Minkowski space-time, it would be OK! Minkowski ...
... in Minkowski Space-time. If we can represent the solution of Klein-Gordon eq. in Rindler space-time by the combination of the solutions of Klein-Gordon eq. in Minkowski space-time, it would be OK! Minkowski ...
BernTalk
... — gravity as the square of YM. Not as well understood as we would like. Crucial for understanding gravity. • Interface of string theory and field theory– certain features clearer in string theory, especially at tree level. KLT classic example. • Can we carry over Berkovits string theory pure spinor ...
... — gravity as the square of YM. Not as well understood as we would like. Crucial for understanding gravity. • Interface of string theory and field theory– certain features clearer in string theory, especially at tree level. KLT classic example. • Can we carry over Berkovits string theory pure spinor ...
AlumniDay_IOP_2 - Princeton University
... • Quantum dynamics at high energy must run into quantum gravity – but all attempts at point particle QFT of gravity have failed (non-renormalizable) • String theory is the only dynamical framework that meets this challenge. It is also the most natural generalization of point particle dynamics. • It ...
... • Quantum dynamics at high energy must run into quantum gravity – but all attempts at point particle QFT of gravity have failed (non-renormalizable) • String theory is the only dynamical framework that meets this challenge. It is also the most natural generalization of point particle dynamics. • It ...
Rapporteur 4: Theory summary (30) Larry McLerran
... Relativistic Heavy Ion Collider at BNL appear to be more accurately described using string theory methods than with more traditional approaches” ...
... Relativistic Heavy Ion Collider at BNL appear to be more accurately described using string theory methods than with more traditional approaches” ...
The String Theory Landscape
... At the Tevatron at Fermilab, we are already exploring a new regime of energy and distance. In three years, we will start to explore much greater energies at the LHC. It is quite likely that we will stumble on remarkable, new features of nature: new symmetries, large extra dimensions, warping of spac ...
... At the Tevatron at Fermilab, we are already exploring a new regime of energy and distance. In three years, we will start to explore much greater energies at the LHC. It is quite likely that we will stumble on remarkable, new features of nature: new symmetries, large extra dimensions, warping of spac ...
An Inflationary Model In String Theory
... The Cosmological Constant and Gravity To calculate the cosmological constant from first principles we need a theory of gravity consistent with the rules of quantum mechanics. Enter String Theory! ...
... The Cosmological Constant and Gravity To calculate the cosmological constant from first principles we need a theory of gravity consistent with the rules of quantum mechanics. Enter String Theory! ...
string theory.
... special relativity and general relativity are very different, there are many fewer observables in GR. This leads to a contradiction. This is a powerful theorem, but has a hidden assumption that allows for an exception. ...
... special relativity and general relativity are very different, there are many fewer observables in GR. This leads to a contradiction. This is a powerful theorem, but has a hidden assumption that allows for an exception. ...
Progress Report 1: Search for Low Mass Strings at the LHC with CMS
... The LHC is first and foremost, a discovery machine. By being the first accelerator to probe deep into the multi-TeV scale, it promises to revolutionize our current understanding of elementary particles. While extraordinarily accurate, the best current model, the Standard Model (SM) of Particle Physi ...
... The LHC is first and foremost, a discovery machine. By being the first accelerator to probe deep into the multi-TeV scale, it promises to revolutionize our current understanding of elementary particles. While extraordinarily accurate, the best current model, the Standard Model (SM) of Particle Physi ...
J.M. Maldacena
... quantum gravity. Forget about QCD and use strings as a theory of quantum gravity. Superstring theory, unification, etc. But what kind of string theory should describe QCD ? ...
... quantum gravity. Forget about QCD and use strings as a theory of quantum gravity. Superstring theory, unification, etc. But what kind of string theory should describe QCD ? ...
All forces arise from the interactions between different objects
... membranes. However, the search of higher-dimensional gravity is presently receiving a lot of attention because of its connection with string theory and black hole physics. The required theories of Quantum Mechanics and General Relativity have been fixed for so long that in the past, constructing str ...
... membranes. However, the search of higher-dimensional gravity is presently receiving a lot of attention because of its connection with string theory and black hole physics. The required theories of Quantum Mechanics and General Relativity have been fixed for so long that in the past, constructing str ...
String Theory
... • Since closed strings relate to gravity and open strings to gauge theory, this duality relates a gravitational system to open in gauge theory. • In 1997 Maldacena made this duality very concrete and began the construction of the dictionary between gravity and gauge ...
... • Since closed strings relate to gravity and open strings to gauge theory, this duality relates a gravitational system to open in gauge theory. • In 1997 Maldacena made this duality very concrete and began the construction of the dictionary between gravity and gauge ...
Matrix model formulations of superstring theory
... • There is no particular “interaction point” (hence no UV div.). ...
... • There is no particular “interaction point” (hence no UV div.). ...
String Theory - Indico
... • Since closed strings relate to gravity and open strings to gauge theory, this duality relates a gravitational system to open in gauge theory. • In 1997 Maldacena made this duality very concrete and began the construction of the dictionary between gravity and gauge ...
... • Since closed strings relate to gravity and open strings to gauge theory, this duality relates a gravitational system to open in gauge theory. • In 1997 Maldacena made this duality very concrete and began the construction of the dictionary between gravity and gauge ...
What is String Theory?
... the Type IIA string, five string theories in D=10 appear particular perturbative of one theory ! non-perturbativeapproximations states ("D0-branes") generate an 11th dimension ! D=11 supergravity in innot tothere a string theory, but rather Just like N=2related SYM theory, are various parametrizatio ...
... the Type IIA string, five string theories in D=10 appear particular perturbative of one theory ! non-perturbativeapproximations states ("D0-branes") generate an 11th dimension ! D=11 supergravity in innot tothere a string theory, but rather Just like N=2related SYM theory, are various parametrizatio ...
ppt - damtp
... should remove spacetime and lead to a state of “nothing”. We have a very clear example of this. • Kaluza-Klein bubbles of nothing were previously thought to require a slow nonperturbative quantum gravitational process. We now have a much faster way to produce them. Some black holes catalyze producti ...
... should remove spacetime and lead to a state of “nothing”. We have a very clear example of this. • Kaluza-Klein bubbles of nothing were previously thought to require a slow nonperturbative quantum gravitational process. We now have a much faster way to produce them. Some black holes catalyze producti ...
NMP_Paper 1_String Theory
... general relativity and quantum mechanics. General relativity focuses on the gravitational nature of massive objects such as galaxies, planets, and black holes while quantum mechanics deals with the tiniest parts of our universe: atomic and subatomic particles. Not only do the theories differ in the ...
... general relativity and quantum mechanics. General relativity focuses on the gravitational nature of massive objects such as galaxies, planets, and black holes while quantum mechanics deals with the tiniest parts of our universe: atomic and subatomic particles. Not only do the theories differ in the ...
“Elegant Universe” Part One “Einstein`s Dream”
... problem that was taken on by Einstein (at the age of 26)… his thoughts, works and equations on the nature of _____ conflicted with the accepted understanding of gravity. a. Light b. Nuclear reactions c. Chemistry d. Gravity 5. _____ Gravity was thought to be a force that acts over distances instanta ...
... problem that was taken on by Einstein (at the age of 26)… his thoughts, works and equations on the nature of _____ conflicted with the accepted understanding of gravity. a. Light b. Nuclear reactions c. Chemistry d. Gravity 5. _____ Gravity was thought to be a force that acts over distances instanta ...
Why I Still Like String Theory
... pointed out over at NEW, there are alternatives. LQG may succeed but to do so it must give a low energy perturbation theory with gravitons or explain why things work differently. Other alternatives mentioned by Smolin are more like toy models but I would add higher spin gravity as another idea that ...
... pointed out over at NEW, there are alternatives. LQG may succeed but to do so it must give a low energy perturbation theory with gravitons or explain why things work differently. Other alternatives mentioned by Smolin are more like toy models but I would add higher spin gravity as another idea that ...