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Infrared fixed point information


In physics, an infrared fixed point is a set of coupling constants, or other parameters, that evolve from arbitrary initial values at very high energies (short distance) to fixed, stable values, usually predictable, at low energies (large distance).[1] This usually involves the use of the renormalization group, which specifically details the way parameters in a physical system (a quantum field theory) depend on the energy scale being probed.

Conversely, if the length-scale decreases and the physical parameters approach fixed values, then we have ultraviolet fixed points. The fixed points are generally independent of the initial values of the parameters over a large range of the initial values. This is known as universality.

  1. ^ See renormalization group and references therein.

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Infrared fixed point

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In physics, an infrared fixed point is a set of coupling constants, or other parameters, that evolve from arbitrary initial values at very high energies...

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Ultraviolet fixed point

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energy limit counterpart is the infrared fixed point. Among other things, it means that a theory possessing a UV fixed point may not be an effective field...

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Top quark

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reach this fixed-point value. The corresponding quark mass is then predicted. The top-quark Yukawa coupling lies very near the infrared fixed point of the...

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Top quark condensate

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the ‘infrared fixed point’ for the top quark Higgs-Yukawa coupling, proposed by Pendleton and Ross (1981). and Hill, The ‘infraredfixed point originally...

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List of mathematical topics in quantum theory

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function (quantum field theory) Renormalizable Cutoff Infrared divergence, infrared fixed point Ultraviolet divergence Fermi's interaction Path-ordering...

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Renormalization group

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coupling to the mass-giving Higgs boson runs toward a fixed non-zero (non-trivial) infrared fixed point, first predicted by Pendleton and Ross (1981), and...

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Index of infrared articles

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Association Infrared Data Transmission Infrared decoy flare Infrared detector Infrared divergence Infrared dye Infrared excess Infrared fixed point Infrared gas...

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Topcolor

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Higgs models was actually anticipated in 1981, and found to be the Infrared fixed point for the top quark mass. The composite Higgs boson made from a bound...

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Critical exponent

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renormalization group. The critical point is an infrared fixed point. In a sufficiently small neighborhood of the critical point, we may linearize the action...

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Scaling dimension

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anomalous dimensions stop running. Such a behavior is called an infrared fixed point. In very special cases, it may happen when the couplings and the...

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Infrared homing

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Infrared homing is a passive weapon guidance system which uses the infrared (IR) light emission from a target to track and follow it seamlessly. Missiles...

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Infrared thermometer

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among the infrared thermometers. There are many varieties of infrared temperature-sensing devices, both for portable and handheld use and as fixed installations...

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Teleparallelism

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torsion. This torsion modifies the Ricci tensor and hence leads to an infrared fixed point for the coupling, on account of teleparallelism ("geometrostasis")...

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Gas detector

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detectors, infrared point sensors, ultrasonic sensors, electrochemical gas sensors, and metal–oxide–semiconductor (MOS) sensors. More recently, infrared imaging...

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Super QCD

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the distance. When M is between 3N/2 and 3N, in the theory has an infrared fixed point where it becomes a nontrivial conformal field theory. The potential...

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NIRSpec

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The NIRSpec (Near-Infrared Spectrograph) is one of the four scientific instruments flown on the James Webb Space Telescope (JWST). The JWST is the follow-on...

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Functional renormalization group

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the same universality class flow to the same (partially) stable infrared fixed point. In this way macrophysics becomes independent of the microscopic...

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Composite Higgs models

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models arose from the heavy top quark and its renormalization group infrared fixed point, which implies a strong coupling of the Higgs to top quarks at high...

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Thermometer

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bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature;...

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Remote control

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Present-day remote controls are commonly consumer infrared devices which send digitally-coded pulses of infrared radiation. They control functions such as power...

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Beacon

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location. A common example is the lighthouse, which draws attention to a fixed point that can be used to navigate around obstacles or into port. More modern...

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Point group

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In geometry, a point group is a mathematical group of symmetry operations (isometries in a Euclidean space) that have a fixed point in common. The coordinate...

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Herschel Space Observatory

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Space Agency (ESA). It was active from 2009 to 2013, and was the largest infrared telescope ever launched until the launch of the James Webb Space Telescope...

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