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Thomas-Fermi model for mesons and noise subtraction techniques in lattice QCD / Suman Baral.

9783030309046 (electronic book)
3030309045 (electronic book)
9783030309039

https://doi.org/10.1007/978-3-030-30904-6
https://doi.org/10.1007/978-3-030-30

Cham, Switzerland : Springer, 2019.

English

1 online resource (ix, 72 pages) : illustrations.

10.1007/978-3-030-30904-6 doi
10.1007/978-3-030-30

QC793.3.Q35

539.7/548

This thesis make significant contributions to both the numerical and analytical aspects of particle physics, reducing the noise associated with matrix calculations in quantum chromodynamics (QCD) and modeling multi-quark mesonic matters that could be used to investigate particles previously unseen in nature. Several methods are developed that can reduce the statistical uncertainty in the extraction of hard-to-detect lattice QCD signals from disconnected diagrams. The most promising technique beats competing methods by 1700 percent, leading to a potential decrease in the computation time of quark loop quantities by an order of magnitude. This not only increases efficiency but also works for QCD matrices with almost-zero eigenvalues, a region where most QCD algorithms break down. This thesis also develops analytical solutions used to investigate exotic particles, specifically the Thomas-Fermi quark model, giving insight into possible new states formed from mesonic matter. The main benefit of this model is that it can work for a large number of quarks which is currently almost impossible with lattice QCD. Patterns of single-quark energies are observed which give the first a priori indication that stable octa-quark and hexadeca-quark versions of the charmed and bottom Z-meson exist.

"Doctoral thesis accepted by the Baylor University, Texas, USA."

Includes bibliographical references.

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Online resource; title from PDF title page (SpringerLink, viewed November 6, 2019).

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