nucl-th digest · Mar 17, 2016

The Cosmological Lithium Problem Revisited

C.A. Bertulani · A.M. Mukhamedzhanov · Shubhchintak

After a brief review of the cosmological lithium problem, we report a few recent attempts to find theoretical solutions by our group at Texas A&M University (Commerce & College Station). We will discuss our studies on the theoretical description of electron screening, the possible existence of parallel universes of dark matter, and the use of non-extensive statistics during the Big Bang nucleosynthesis epoch. Last but not least, we discuss possible solutions within nuclear physics realm. The impact of recent measurements of relevant nuclear reaction cross sections for the Big Bang nucleosynthesis based on indirect methods is also assessed. Although our attempts may not able to explain the observed discrepancies between theory and observations, they suggest theoretical developments that can be useful also for stellar nucleosynthesis.

↳ astro-ph.COnucl-exnucl-thAIP Conf.Proc.(2016)·3 citations

Universal relations between nongaussian fluctuations in heavy-ion collisions

We show that universality near a critical end point implies a characteristic relation between third- and fourth-order baryon susceptibilities

χ_{3}

and

χ_{4}

, resulting in a banana-shaped loop when

χ_{4}

is plotted as a function of

χ_{3}

along a freeze-out line. Including the individual enhancements of

χ_{3}

and

χ_{4}

near a critical point, these features may be a consistent set of observations supporting the interpretation of baryon fluctuations data as arising from criticality.

↳ hep-phnucl-exnucl-thPRD(2017)·16 citations

Thursday·March 17, 2016

The Cosmological Lithium Problem Revisited

Universal relations between nongaussian fluctuations in heavy-ion collisions

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