euler line
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2021 ◽  
Vol 81 (1) ◽  
Author(s):  
James Leech ◽  
Milovan Šuvakov ◽  
V. Dmitrašinović

AbstractWe have re-analysed the lattice QCD calculations of the 3-quark potentials by: (i) Sakumichi and Suganuma (Phys Rev D 92(3), 034511, 2015); and (ii) Koma and Koma (Phys Rev D 95(9), 094513, 2017) using hyperspherical variables. We find that: (1) the two sets of lattice results have only two common sets of 3-quark geometries: (a) the isosceles, and (b) the right-angled triangles; (2) both sets of results are subject to unaccounted for deviations from smooth curves that are largest near the equilateral triangle geometry and are function of the hyperradius – the deviations being much larger and extending further in the triangle shape space in Sakumichi and Suganuma’s than in Koma and Koma’s data; (3) the variation of Sakumichi and Suganuma’s results brackets, from above and below, the Koma and Koma’s ones; the latter will be used as the benchmark; (4) this benchmark result generally passes between the Y- and the $$\Delta $$ Δ -string predictions, thus excluding both; (5) three pieces of elastic strings joined at a skewed junction, which lies on the Euler line, reproduce such a potential, within the region where the data sets agree, in qualitative agreement with the calculations of colour flux density by Bissey et al. (Phys Rev D 76, 114512, 2007).


2018 ◽  
Vol 102 (553) ◽  
pp. 133-135
Author(s):  
Sava Grozdev ◽  
Hiroshi Okumura ◽  
Deko Dekov
Keyword(s):  

2014 ◽  
Vol 51 (4) ◽  
pp. 815-836 ◽  
Author(s):  
Serge Tabachnikov ◽  
Emmanuel Tsukerman
Keyword(s):  

2012 ◽  
Vol 96 (535) ◽  
pp. 78-81 ◽  
Author(s):  
Michael De Villiers

The Euler line of a triangle is mostly valued, not for any practical application, but purely as a beautiful, esoteric example of post-Greek geometry. Much to his surprise, however, the author recently came across the following result and theorem by Sylvester (1814-1897) in [1] that involves an interesting application of forces that relate to the Euler line (segment). This result is also mentioned in [2] without proof or reference to Sylvester.


2011 ◽  
Vol 95 (532) ◽  
pp. 115-117 ◽  
Author(s):  
J. A. Scott
Keyword(s):  

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