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Effective Field Theory Lectures
Effective Field Theory Lectures

... a dynamical fixed point resulting from cosmic evolution. Such investigations are at the same time both fascinating — and possibly an incredible waste of time! To begin with I will not discuss effective field theories, however, but effective quantum mechanics. The essential issues of approximating sh ...
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... Once inside a uniform sphere of charge, the electric field is zero. Since E = 0 the potential does not change within the sphere (meaning it is the same value as the surface). V  1/r outside the sphere. ...
Crowell - Conceptual Physics - IA
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Particle Physics in the LHC Era - SUrface

... In the past four years the Large Hadron Collider (LHC) has made more precise measurements than ever before. Currently the SM of particle physics is known to have excellent agreement with these measurements. As a result of this agreement with data, the SM continues to play such a central role in mode ...
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... Metabolism is a very complex biological process. Simple organisms are able to produce enormous amounts of different small organic compounds (metabolites) and energy from very simple molecules like for example glucose. These small compounds are in turn further metabolized to build even the biggest bu ...
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... It is not sufficient to imagine that electric charge in the aether is displaced from a rest position in a background continuum of opposite charge polarity to which it is attracted by a restoring force. Indeed, one must consider such action to be superimposed on a system of charge which has an underl ...
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Negative mass

In theoretical physics, negative mass is a hypothetical concept of matter whose mass is of opposite sign to the mass of normal matter, e.g. −2 kg. Such matter would violate one or more energy conditions and show some strange properties, stemming from the ambiguity as to whether attraction should refer to force or the oppositely oriented acceleration for negative mass. It is used in certain speculative theories, such as on the construction of wormholes. The closest known real representative of such exotic matter is a region of pseudo-negative pressure density produced by the Casimir effect. Although general relativity well describes gravity and the laws of motion for both positive and negative energy particles, hence negative mass, it does not include the other fundamental forces. On the other hand, although the Standard Model well describes elementary particles and the other fundamental forces, it does not include gravity, even though gravity is intimately involved in the origin of mass and inertia. A model that explicitly includes gravity along with the other fundamental forces may be needed for a better understanding of the concept of negative mass.
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