Print article and do activities on paper
... first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at work. Actually, it is a critical view of a great scientist, which comes originally from a drawing by William Blake, the romantic poet and artist. ...
... first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at work. Actually, it is a critical view of a great scientist, which comes originally from a drawing by William Blake, the romantic poet and artist. ...
Physics Beyond the Standard Model
... discovered that there are transformations between all five superstring theories. (Ed Witten) This means they are all views of a larger theory which is not well understood, but is called M theory. It may be in 11 dimensions. For further information, see ...
... discovered that there are transformations between all five superstring theories. (Ed Witten) This means they are all views of a larger theory which is not well understood, but is called M theory. It may be in 11 dimensions. For further information, see ...
String Theory - Indico
... • M-theory is unique • It has no dimensionless parameters at all • It reduces to the different string theories in various perturbative limits • It is truly nonperturbative and has been used to solve quantum field theories exactly at low energies. That is: all loops and all instantons ...
... • M-theory is unique • It has no dimensionless parameters at all • It reduces to the different string theories in various perturbative limits • It is truly nonperturbative and has been used to solve quantum field theories exactly at low energies. That is: all loops and all instantons ...
Review of Hyperspace by Michio Kaku 359p (1994)
... 50th, so apparently all of inflation is included. It has been frequently theorized that black holes may be tunnels in spacetime to other universes. But it appears we don´t know if black holes really pinch off hyperspheres of spacetime in which light is trapped. Along with its untestability and lack ...
... 50th, so apparently all of inflation is included. It has been frequently theorized that black holes may be tunnels in spacetime to other universes. But it appears we don´t know if black holes really pinch off hyperspheres of spacetime in which light is trapped. Along with its untestability and lack ...
The beauty of string theory - Institute for Advanced Study
... In string theory, different harmonics correspond to different elementary particles. If string theory proves correct, all elementary particles — electrons, photons, neutrinos, quarks, and the rest — owe their existence to subtle differences in the vibrations of strings. The theory offers a way to uni ...
... In string theory, different harmonics correspond to different elementary particles. If string theory proves correct, all elementary particles — electrons, photons, neutrinos, quarks, and the rest — owe their existence to subtle differences in the vibrations of strings. The theory offers a way to uni ...
D-Geometry As A Model For Quantum Space-Time
... Although with the development of quantum physics and the theory of General Relativity great advances in our understanding of nature have been accomplished in the twentieth century, their unification is still an open and probably the most ambitious problem in theoretical physics. Right at the heart o ...
... Although with the development of quantum physics and the theory of General Relativity great advances in our understanding of nature have been accomplished in the twentieth century, their unification is still an open and probably the most ambitious problem in theoretical physics. Right at the heart o ...
Emergent spacetime - School of Natural Sciences
... Correlations functions in the boundary field theory are string amplitudes with appropriate boundary conditions in the bulk theory. The radial direction emerges out of the boundary field theory. It is related to the energy (renormalization) scale. This has led to many new insights about gauge theorie ...
... Correlations functions in the boundary field theory are string amplitudes with appropriate boundary conditions in the bulk theory. The radial direction emerges out of the boundary field theory. It is related to the energy (renormalization) scale. This has led to many new insights about gauge theorie ...
An Inflationary Model In String Theory
... •Broad enough to include quantum mechanics and gravity; chiral matter closely resembling that of the standard model; a positive cosmological constant and inflation. •Challenge is to find vacua that resemble the standard model and make predictions. This might well be possible. ...
... •Broad enough to include quantum mechanics and gravity; chiral matter closely resembling that of the standard model; a positive cosmological constant and inflation. •Challenge is to find vacua that resemble the standard model and make predictions. This might well be possible. ...
ppt - damtp
... a 2D Yang-Mills theory on the Milne universe. In this case the Milne universe is a fixed background so there is no backreaction. It is not yet clear if you can evolve through the singularity. ...
... a 2D Yang-Mills theory on the Milne universe. In this case the Milne universe is a fixed background so there is no backreaction. It is not yet clear if you can evolve through the singularity. ...
University of Groningen M-theory and gauged supergravities Roest
... field theory (QFT) and general relativity (GR). To fully appreciate their emergence and merits, we will first sketch the historical development of particle and high-energy physics during the last century. The inception of particle physics spanned the larger part of the twentieth century, starting wi ...
... field theory (QFT) and general relativity (GR). To fully appreciate their emergence and merits, we will first sketch the historical development of particle and high-energy physics during the last century. The inception of particle physics spanned the larger part of the twentieth century, starting wi ...
All forces arise from the interactions between different objects
... gravitational force, there exists a duality between strong and weak coupling. A coupling constant describes how strong an interaction is. A larger coupling constant means a stronger force; hence, the coupling constant is of the order of 10 -41 and it is derived from the masses of the proton and elec ...
... gravitational force, there exists a duality between strong and weak coupling. A coupling constant describes how strong an interaction is. A larger coupling constant means a stronger force; hence, the coupling constant is of the order of 10 -41 and it is derived from the masses of the proton and elec ...
Bilbao - INFN - Sezione di Firenze
... consistent way to combine GR and QM Insisting on theoretical consistency has paid off enormously towards understanding EW and Strong interactions..but it took some 50 years of hard experimental & theoretical work to produce the SM of particle physics Insisting on finiteness will probably pay as much ...
... consistent way to combine GR and QM Insisting on theoretical consistency has paid off enormously towards understanding EW and Strong interactions..but it took some 50 years of hard experimental & theoretical work to produce the SM of particle physics Insisting on finiteness will probably pay as much ...
What is String Theory?
... A theory of quantum gravity is non-local and carries the same number of degrees of freedom as a theory on the boundary ! (…very relevant for quantum information in black holes) ...
... A theory of quantum gravity is non-local and carries the same number of degrees of freedom as a theory on the boundary ! (…very relevant for quantum information in black holes) ...
Matrix model formulations of superstring theory
... analogous to lattice gauge theory for QCD IKKT model : nonperturbative formulation of superstrings the Euclidean version has interesting dynamics but not quite realistic… (motivates Lorentzian version) ...
... analogous to lattice gauge theory for QCD IKKT model : nonperturbative formulation of superstrings the Euclidean version has interesting dynamics but not quite realistic… (motivates Lorentzian version) ...
Why 3+1 = 11 for small values of 7
... fruitful projects were taken up. It seemed that all hope was lost for gravity, while the other forces had their time in the spotlight, it remained homeless and abandoned, until years later when hope presented itself, in the form of ...
... fruitful projects were taken up. It seemed that all hope was lost for gravity, while the other forces had their time in the spotlight, it remained homeless and abandoned, until years later when hope presented itself, in the form of ...
Slides
... There are therefore 5d gravity models (toy) of QCD which allow computations of bound state masses and their interaction strengths arXiv:0711.4467 ...
... There are therefore 5d gravity models (toy) of QCD which allow computations of bound state masses and their interaction strengths arXiv:0711.4467 ...
A Gravity Model for Superconductors & (Non
... • When black hole is too heavy (high T), φ will fall into the horizon. (normal state) • When black hole is not so heavy (low T), φ safely stays outside the horizon and forms a condensate. (superconducting state) ...
... • When black hole is too heavy (high T), φ will fall into the horizon. (normal state) • When black hole is not so heavy (low T), φ safely stays outside the horizon and forms a condensate. (superconducting state) ...
String and the Strong Force Summary/Review
... – This might be explained by string theory because if mesons are really open strings then the more wiggles an open string has, the greater it’s mass is and the greater it’s spin. In fact, string theory predicts just such a linear relationship. – In QCD, mesons are formed as combinations of quarks an ...
... – This might be explained by string theory because if mesons are really open strings then the more wiggles an open string has, the greater it’s mass is and the greater it’s spin. In fact, string theory predicts just such a linear relationship. – In QCD, mesons are formed as combinations of quarks an ...
Classical solutions of open string field theory
... Field theoretic description of all excitations of a string (open or closed) at once. Useful especially for physics of backgrounds: tachyon condensation or instanton physics Single Lagrangian field theory which should around its various critical points describe physics of diverse D-brane backgrounds, ...
... Field theoretic description of all excitations of a string (open or closed) at once. Useful especially for physics of backgrounds: tachyon condensation or instanton physics Single Lagrangian field theory which should around its various critical points describe physics of diverse D-brane backgrounds, ...
“Elegant Universe” Part One “Einstein`s Dream”
... 11. ____ What are membranes (or branes) in relation to strings? a. Tiny pieces of the larger brane b. Stretched out strings themselves c. Tiny pieces of atoms 12. If the universe is just one membrane hanging in a larger dimensional space, what do you call this larger dimensional space? (hint- we are ...
... 11. ____ What are membranes (or branes) in relation to strings? a. Tiny pieces of the larger brane b. Stretched out strings themselves c. Tiny pieces of atoms 12. If the universe is just one membrane hanging in a larger dimensional space, what do you call this larger dimensional space? (hint- we are ...
26-06-2015-Juan-Maldacena (2)
... • Spacetime is closely connected to the entanglement properties of the fundamental degrees of freedom. • Slogan: Entanglement is the glue that holds spacetime together… ...
... • Spacetime is closely connected to the entanglement properties of the fundamental degrees of freedom. • Slogan: Entanglement is the glue that holds spacetime together… ...
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 ...
Theoretical Particle
... of strings Extended objects Strings and membranes D branes Open strings can have Dirichlet boundary conditions. The endpoints of the open strings are fixed to move in some fixed plane -> D branes ...
... of strings Extended objects Strings and membranes D branes Open strings can have Dirichlet boundary conditions. The endpoints of the open strings are fixed to move in some fixed plane -> D branes ...
NMP_Paper 1_String Theory
... subatomic strings can interact with. The other stipulation to string theory is the idea of super symmetry, or the idea that for every fermion in the universe a complimentary boson exists. Super symmetry vastly simplifies the mathematics of string theory and is therefore basically necessary for the ...
... subatomic strings can interact with. The other stipulation to string theory is the idea of super symmetry, or the idea that for every fermion in the universe a complimentary boson exists. Super symmetry vastly simplifies the mathematics of string theory and is therefore basically necessary for the ...
String theory
In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. String theory describes how these strings propagate through space and interact with each other. On distance scales larger than the string scale, a string looks just like an ordinary particle, with its mass, charge, and other properties determined by the vibrational state of the string. In string theory, one of the many vibrational states of the string corresponds to the graviton, a quantum mechanical particle that carries gravitational force. Thus string theory is a theory of quantum gravity.String theory is a broad and varied subject that attempts to address a number of deep questions of fundamental physics. String theory has been applied to a variety of problems in black hole physics, early universe cosmology, nuclear physics, and condensed matter physics, and it has stimulated a number of major developments in pure mathematics. Because string theory potentially provides a unified description of gravity and particle physics, it is a candidate for a theory of everything, a self-contained mathematical model that describes all fundamental forces and forms of matter. Despite much work on these problems, it is not known to what extent string theory describes the real world or how much freedom the theory allows to choose the details.String theory was first studied in the late 1960s as a theory of the strong nuclear force, before being abandoned in favor of quantum chromodynamics. Subsequently, it was realized that the very properties that made string theory unsuitable as a theory of nuclear physics made it a promising candidate for a quantum theory of gravity. The earliest version of string theory, bosonic string theory, incorporated only the class of particles known as bosons. It later developed into superstring theory, which posits a connection called supersymmetry between bosons and the class of particles called fermions. Five consistent versions of superstring theory were developed before it was conjectured in the mid-1990s that they were all different limiting cases of a single theory in eleven dimensions known as M-theory. In late 1997, theorists discovered an important relationship called the AdS/CFT correspondence, which relates string theory to another type of physical theory called a quantum field theory.One of the challenges of string theory is that the full theory does not yet have a satisfactory definition in all circumstances. Another issue is that the theory is thought to describe an enormous landscape of possible universes, and this has complicated efforts to develop theories of particle physics based on string theory. These issues have led some in the community to criticize these approaches to physics and question the value of continued research on string theory unification.