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1:13:56 University of California Irvine (UCI) English 2013

Classical Physics Lecture 4

  • Published: 2013
  • Publisher: University of California Irvine (UCI)
  • Language: English
1:16:50 Phillies, George English 2012

23 Viscosity, viscoelasticity

Lecture 23 - Viscosity, viscoelasticity. George Phillies lectures from his book "Phenomenology of Polymer Solution Dynamics".
  • Published: 2012
  • Publisher: Phillies, George
  • Language: English
1:07:41 University of Cambridge English 2014

Modern Steel Products (2014) - Standards, Ironmaking: lecture 7

Professor de Cooman finishes his lecture on "Standards" and begins one on ironmaking using the blast furnace. This is a part of a course of lectures by Professor Bruno de Cooman, of the Graduate Institute of Ferrous Technology, POSTECH, Republic of Korea.
  • Published: 2014
  • Publisher: University of Cambridge
  • Language: English
1:45:40 Stanford University English 2013

Cosmology | Lecture 5

(February 11, 2013) After reviewing the cosmological equations of state, Leonard Susskind introduces the concept of vacuum energy. Vacuum energy is represented by the cosmological constant, and is also known as dark energy.
  • Published: 2013
  • Publisher: Stanford University
  • Language: English
1:46:55 Stanford University English 2011

String Theory and M-Theory | Lecture 1

(September 20, 2010) Leonard Susskind gives a lecture on the string theory and particle physics. He is a world renown theoretical physicist and uses graphs to help demonstrate the theories he is presenting. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle.
  • Published: 2011
  • Publisher: Stanford University
  • Language: English
1:40:48 Stanford University English 2011

String Theory and M-Theory | Lecture 5

(October 18, 2010) Professor Leonard Susskind delivers a lecture concerning plonck variables and how they relate to string theory in the context of modern physics. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle.
  • Published: 2011
  • Publisher: Stanford University
  • Language: English
1:04:10 Institute of Physics (IOP) English 2011

Graphene based Electronics and Optoelectronics

  • Published: 2011
  • Publisher: Institute of Physics (IOP)
  • Language: English
04:01 Institute of Physics (IOP), Deutsche Physikalische Gesellschaft (DPG) English 2016

An operational approach to spacetime symmetries: Lorentz transformations from quantum communication

In most approaches to fundamental physics, spacetime symmetries are postulated a priori and then explicitly implemented in the theory. This includes Lorentz covariance in quantum field theory and diffeomorphism invariance in quantum gravity, which are seen as fundamental principles to which the final theory has to be adjusted. In this paper, we suggest, within a much simpler setting, that this kind of reasoning can actually be reversed, by taking an operational approach inspired by quantum information theory. We consider observers in distinct laboratories, with local physics described by the laws of abstract quantum theory, and without presupposing a particular spacetime structure. We ask what information-theoretic effort the observers have to spend to synchronize their descriptions of local physics. If there are 'enough' observables that can be measured universally on several different quantum systems, we show that the observers' descriptions are related by an element of the orthochronous Lorentz group , together with a global scaling factor. Not only does this operational approach predict the Lorentz transformations, but it also accurately describes the behavior of relativistic Stern–Gerlach devices in the WKB approximation, and it correctly predicts that quantum systems carry Lorentz group representations of different spin. This result thus hints at a novel information-theoretic perspective on spacetime.
  • Published: 2016
  • Publisher: Institute of Physics (IOP), Deutsche Physikalische Gesellschaft (DPG)
  • Language: English
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