Talk:Quark star

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1 Strange Matter
2 Quark Star
3 Quark non-strange star
4 Classification

[edit] Strange Matter

I can't decide whether strange stars deserve their own article, separate from strange matter. There is a Danish-language article on strange stars, so we get a nice interwiki link, and they make more sense if they link articles on the same things. But on the other hand, everything that one can say about a strange star is also something about strange matter, so we can't really remove the information from strange matter that I've moved here... Oh, I'll think about it later... -- Oliver P. 19:30 19 Jun 2003 (UTC)

It might be good to talk about Strange Matter/Quark Matter (I'd advocate the latter terminology) purely in terms of the physics of degenerate matter and the debate over it's plausibility (ie, does QCD allow the arrangement? Is the degeneracy pressure provided by the strong nuclear force strictly analogous to neutron or electron degeneracy pressure? Are exotic quark flavors required or implied by the theory?) and move the bulk of the astrophysical considerations to this writeup.

-Peter

The star then becomes known as a "quark star" or "strange star", similar to a single gigantic hadron (but bound by gravity rather than the color force).

The force of gravity may have much to do with the binding of such a star, but wouldn't the color force also contribute to the binding energy?

-- User:Kryptid Nov 2006

[edit] Quark Star

Shouldn't this article redirect to Quark Star or vice versa?

--User:Killroy

[edit] Quark non-strange star

Is it strictly necessary to have strange quarks? If not then "Strange star" requres splitting into a separate section. Zzzzzzzzzzz 03:22, 10 June 2006 (UTC)

[edit] Classification

All Strange stars are Quark stars. But, not all Quark stars are Strange stars. Other Quark Stars. Strange Exotic States and Compact Stars

Jaffe 1977, suggested a four-quark state with strangeness (qsqs
H-dibaryon, a six-quark state with equal numbers of up-, down-, and strange quarks (uuddss)
bound multi-quark systems with heavy quarks QQqq
pentaquark states were first proposed with a charm anti-quark (qqqsc), 1987
pentaquark state with an antistrange quark & four light quarks consisting of up- and down-quarks only (qqqqs)
light pentaquarks are grouped within an antidecuplet, the lightest candidate, Ө+ (big epsilon)
- can also be described by the diquark model of Jaffe and Wilczek (QCD)
Ө++ (big epsilon) & antiparticle Ө--
doubly strange pentaquark (sssddu), memeber of the light pentaquark antidecuplet
charmed pentaquark Өc(3100) (uuddc) state was detected by the H1 collaboration