Collapsed Nuclei: Possible or Not?

  • Thread starter Thread starter SkepticJ
  • Start date Start date
  • Tags Tags
    Nuclei
SkepticJ
Messages
243
Reaction score
1
Are collapsed nuclei, like are discussed in http://prd.aps.org/abstract/PRD/v4/i6/p1601_1" still thought to be possible?
 
Last edited by a moderator:
Physics news on Phys.org
Interesting. When I googled, I got a google books link that let me look at this book: Neutron stars: Equation of state and structure, P. Haensel, Paweł Haensel, A. Y. Potekhin, D. G. Yakovlev. Apparently Bodmner had two separate types that he hypothesized, one with strangeness and one without. The WP article http://en.wikipedia.org/wiki/Strangelet may be helpful. All attempts to detect or produce strangelets have failed.
 
bcrowell said:
Interesting. When I googled, I got a google books link that let me look at this book: Neutron stars: Equation of state and structure, P. Haensel, Paweł Haensel, A. Y. Potekhin, D. G. Yakovlev. Apparently Bodmner had two separate types that he hypothesized, one with strangeness and one without. The WP article http://en.wikipedia.org/wiki/Strangelet may be helpful. All attempts to detect or produce strangelets have failed.
A detailed mass measurement of a heavy neutron star has ruled out most exotic types
http://blogs.physicstoday.org/update/2010/11/heaviest-neutron-star.html
Neat stuff.

I don't really understand how closely this relates to the "collapsed nuclei" paper, as I can only see the abstract right now, and it is unclear to me what they mean.
 
Last edited by a moderator:
bcrowell said:
Apparently Bodmner had two separate types that he hypothesized, one with strangeness and one without.

What about the kind without strangeness, still possible under current understanding? '71 was ages and revolutions ago in particle physics.
 
Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
Back
Top