User:Gpc62/temp

Bismuth triborate

 * Known in optics community as BiBO crystals.
 * Not to be confused with BBO crystals = beta barium borate crystals; BBO disambig has entries pointing to barium borate (and to beta barium borate, which reirects to barium borate), where the relevant properties and applications are discussed.
 * BiBO crystals seem to be mentioned only on page about diode-pumped solid-state lasers.
 * There is a disambig page for BIBO (all caps) and a page for Bibo (a drink).

Miya Folick?
Song on ep. 12 or 13 of 13 Reasons Why. ("I am learning to love/ I am learning to let myself be loved/How did I miss this lesson when I was young?") Further notes on ipad.

Peccei–Quinn theory

 * "Because particles arise within as states of quantum fields"


 * This sounds wrong: "meaning that the gauge boson becomes massive and the axion is no longer observable (see Higgs mechanism). This is phenomenologically desirable"
 * more

Misalignment mechanism

 * why bother having this as a separate page?
 * Does it come up in other contexts? (Axion is the only Article page that links to it)


 * merge with Peccei–Quinn theory? (and redirect old page to new section on it)

Axion

 * mentions KSVZ (see below also)
 * Cosmological implications section:
 * questions (which? why?) attached to "theories," etc.
 * do the references really make sense
 * eg, ref 42 more specialized than necessary to support "created abundantly during Big Bang"

Fermionic condensate

 * Delete "[which?]"'s from: "A chiral condensate is an example of a fermionic condensate..."
 * reorder examples: BCS, 3He, chiral (reword for the [which?]'s?), QCD


 * note "Quark condensate" redirects here. Where it is mentioned here, include a link to stuff about SVZ sum rules that exploits the condensates (as VEVs)
 * see also talk page
 * reintroduce more of the material from the old "Fermion condensate" page, eg the VEV stuff
 * Answer some of the ancient Qs?
 * eg, on article itself, clarify why the condensate of bosonic molecules (2 fermionic atoms) is not a true fermionic condensate?
 * is it because of this?: the molecules form above Tc and then Bose condense -- vs -- the 40K atoms pair up as a part of the phase transition that occurs at Tc.

Chiral perturbation theory

 * Add cite to Weinberg QFT textbook (if he says it there) for: "According to Steven Weinberg, an effective theory can be useful if one writes down all terms consistent with the symmetries of the parent theory."
 * copyedit (eg, problems with commas and periods)
 * the QCD partition function, (such that the degrees of freedom in the Lagrangian are replaced by hadrons) then one could


 * valid in finite volume, (though the expansion is the only one valid in infinite volume.)
 * The effective theory in general is non-renormalizable, However given
 * the contact terms that come from the O(p^4) Lagrangian (this is different for an SU(2) vs. SU(3) theory) at tree-level and the one-loop contributions from the O(p^2) Lagrangian.) One can

Integrated quantum photonics

 * Copyedit?
 * create page: thermo-optic effect / thermo-optic phase shift
 * (cf Bristol work using thermo-optic phase shifters)

other Zakharov-related pages needing tweaks or reworking

 * Vainshtein & Shifman
 * minor tweaks, links will do


 * QCD sum rules
 * it's only a stub, and it needs a major rewrite even to be a coherent stub
 * it is lifted mostly verbatim from one of the publications listed
 * there are no references
 * see below for my start on this before I decided to hit cancel instead of save
 * cf Axion, as an example of a page on a technical topic with a very short lede, which may be the most appt. approach for this page

partly completed rewrite of QCD sum rules

 * 3/22/17

The QCD sum rules (or ((Mikhail Shifman|Shifman]]–((Arkady Vainshtein|Vainshtein]]–Zakharov sum rules) are a way of dealing with the problem that conventional perturbative techniques often fail in ((quantum chromodynamics]] (QCD) due to the theory's strong coupling and the phenomenon of ((color confinement|confinement]].

The idea is to work with ((operator product expansion]]s of gauge invariant operators. The effects of short- and long-distance quark-gluon interactions are separated. The short-distance interactions can be dealt with by QCD perturbation theory calculations. The long-distance interactions are parametrized in terms of universal ((Vacuum expectation value|vacuum condensates]] or light-cone distribution amplitudes.

In these calculations, instead of using a model-dependent treatment in terms of constituent quarks, hadrons are represented by their interpolating quark currents taken at large virtualities. The result of the QCD calculation is matched, via dispersion relation, to a sum over hadronic states. The sum rule obtained in this way allows the calculation of observable characteristics of the hadronic ground state. Conversely, parameters of QCD such as quark masses and vacuum condensate densities can be extracted from sum rules that have experimentally known hadronic parts. What is also very important, the interactions of quark-gluon currents with QCD vacuum fields critically depend on the quantum numbers (spin-parity, flavor content) of these currents.

=draft content for Valentin Ivanovich Zakharov=


 * 3/22/17

top notes

 * cross references/disambiguate other Zakharov's, in particular physicist Vladimir E.Z. and Valentin (Dmitrievich) Zakharov (skater) (rename his page?)


 * Zakharov is mentioned (with 1st name) on these pages:
 * Penguin diagram
 * Massive gravity (redirect from Van Dam-Veltman-Zakharov discontinuity)


 * Also mentioned on:
 * Axion (KSVZ axion; other three names are linked)


 * might be cited on these pages:
 * Stephan Narison
 * Custodial symmetry
 * Light front quantization (SVZ)
 * Light-front computational methods (SVZ)

=Google translate of RU page=


 * https://ru.wikipedia.org/wiki/Захаров,_Валентин_Иванович

Valentin Ivanovich Zakharov (born 1940) is a Soviet and Russian physicist, ((Doctor of Physical and Mathematical Sciences)). The main works in the field of elementary particle physics, quantum chromodynamics.

Scientific activity
In 1966-1990 he was an employee of the ((ITEP)) (Moscow).

After that, he worked for about 20 years in the USA, Germany and Italy [1].

Currently ((edit this--now emeritus according to website at MIPT)) is head of the Department of Theoretical Astrophysics and Quantum Field Theory at ((MIPT)) [2].

Awards and Prizes

 * ((The Lenin Komsomol Prize)) (1973) - for a series of papers on dispersion relations and weak interactions at high energies


 * ((Sakurai Prize)) (1999) - for his fundamental contribution to the understanding of nonperturbative ((QCD)), weak nonleptonic decays, and analytic properties of supersymmetric gauge theories [3].


 * ((Prize of I. Ya. Pomeranchuk)) (2010) - for outstanding contribution to the development of quantum field theory: creation of QCD sum rules and nonperturbative operator decomposition, and calculation of exact β-functions in supersymmetric field theories [4].

Data Table
((All data is linked))

Date of Birth: August 9, 1940 (76 years)

Country: Russia

Scientific field: Particle physics

Place of work:
 * ITEP
 * MIPT

Academic degree: Doctor of Physical and Mathematical Sciences

Alma Mater: MIPT

Awards and Prizes: The Lenin Komsomol Prize - 1973

Ref 3 content:
1999 J.J. Sakurai Prize for Theoretical Particle Physics Recipient

Valentin Invanovich Zakharov

Max-Planck Institut für Physik Citation:

"For fundamental contributions to the understanding of non-perturbative QCD, non-leptonic weak decays, and the analytic properties of supersymmetric gauge theories."

Background:

Dr. Zakharov graduated from the Moscow Institute of Physical Engineering in 1963 and received his Ph.D. in 1966 from the Institute of theoretical and Experimental Physics (ITEP) in Moscow.

Dr. Zakharov was a researcher at ITEP in Moscow from 1966 to 1990. He became a staff member at the Max-Planck Institute for Physics in Munich, Germany where he worked until 1993 when he became a Professor of Physics at the University of Michigan in Ann Arbor. In 1998, Dr. Zakharov returned to the Max-Planck Institute for Physics in Munich.

Dr. Zakharov has conducted extensive research in Particle Theory, particularly quantum chromodynamics, supersymetric theories. His current research is in the area of non-perturbative effects at short distances.

=(GPC improved) Google translate of DE page=


 * https://de.wikipedia.org/wiki/Walentin_Iwanowitsch_Sacharow

Walentin Iwanowitsch Sakharov ( Russian Валентин Иванович Захаров, English transliteration Valentine Zakharov; * August 9, 1940 ) is a ((Russian)) theoretical physicist.

Zakharov studied at the Institute of Physical Technology in ((Moscow)), where he graduated in 1963. In 1966 he received his Russian doctorate degree (equivalent to the Habilitation in the West) at the ((Institute for Theoretical and Experimental Physics)) (ITEP) in ((Moscow)) where he was a scientist until 1990. He then went to the ((Max Planck)) Institute ((for Physics)) in ((Munich)), was a professor at the ((University of Michigan)) in ((Ann Arbor)) from 1993, and from 1998 onwards at the MPI in Munich.

Zakharov is mainly known for his work with ((Arkady Vainshtein)) and ((Mikhail Shifman)) on non-perturbative-theoretical aspects of ((quantum chromodynamics)) (QCD), for example, the QCD summation rule named after them (according to them the SVZ sum rule).

In 1999, he received the ((Sakurai Prize)) with Vainshtein and Shifman.

Weblinks
Appreciation and biography on the occasion of the award of the Sakurai Prize ((http://www.aps.org/programs/honors/prizes/sakurai.cfm)) (that's generic page about prize, with a link to page about him, and also S & V)

=Pages at MPI Munich=


 * http://wwwth.mpp.mpg.de/members/xxz/
 * "last updated 28-Feb-2006"


 * Former Permanent Staff


 * Research interests: Phenomenology of High-Energy Physics


 * http://wwwth.mpp.mpg.de/


 * Werner-Heisenberg-Institut (probably an alternative name for the MPP Munich) / Theoretical Physics Division
 * Listed under "Emeriti"
 * Field of research - Field Theory

=Triiodothyronine=

Triiodothyronine, also known as T3, is a ((thyroid hormone]]. It affects almost every ((physiology|physiological]] process in the body, including ((Human development (biology)|growth and development]], ((metabolism]], ((body temperature]], and ((heart rate]].

Production of T3 and its ((prohormone]] ((thyroxine]] (T4) is activated by ((thyroid-stimulating hormone]] (TSH), which is released from the anterior pituitary gland. This pathway is part of a closed-loop ((feedback]] process: Elevated concentrations of T3 and T4 in the ((blood plasma]] inhibit the production of TSH in the anterior pituitary gland, which leads to decreased production of T3 and T4 by the thyroid gland. As concentrations of T3 and T4 decrease, the anterior pituitary gland increases production of TSH, increasing production of T3 and T4. This ((negative feedback control system|feedback control system]] stabilizes the amount of thyroid hormones that are in the ((bloodstream]].

T3 is the true hormone.(rephrase?) Its effects on target tissues are roughly four times as potent as those of T4. The thyroid gland produces about 20% of its thyroid hormone as T3 and 80% as T4. Roughly 85% of the circulating T3 is later formed in the liver and anterior pituitary by removal of the iodine atom from the carbon atom number five of the outer ring of T4. The concentration of T3 in the human blood plasma is about one-fortieth that of T4.(And is that the total conc of each or just the free (active) hormones?) This low level occurs because the ((biological half-life|half-life]] of T3 is only 2.5 days, much shorter than the 6.5-day half-life of T4. (That ref says T3 has half-life of only about 1 day. And does 1:6.5 half-life fully acount for 20:80 changing to 1:40? ((No, it does not. That would lead to a 1:26 ratio, not 1:40. Furthermore, conversion of T4 to T3 would further boost the T3 level. Presumably the issue of free vs protein-bound must be at work here. Also, are these quoted half-lives relevant for the quantity of free or protein-bound Tn? They are half-lives of administered drugs, which may be different again versus Tn coming out of the thyroid.)) Also, 1/40*4 implies total free T3 has only 1/10 effect of total free T4. Ah--do these numbers about concentrations in the blood refer to the protein-bound quantities or the much smaller free hormones?)