Abstract:
The associative algebra of symplectic reflections H:=H1,ν1,ν2(I2(2m)) based on the group generated by the root system I2(2m) depends on two parameters, ν1 and ν2. For each value of these parameters, the algebra admits an m-dimensional space of traces. A trace tr is said to be degenerate if the corresponding symmetric bilinear form Btr(x,y)=tr(xy) is degenerate. We find all values of the parameters ν1 and ν2 for which the space of traces contains degenerate traces and the algebra H consequently has a two-sided ideal. It turns out that a linear combination of degenerate traces is also a degenerate trace. For the ν1 and ν2 values corresponding to degenerate traces, we find the dimensions of the space of degenerate traces.
Keywords:
algebra of symplectic reflections, ideal, trace, supertrace, Coxeter group, group algebra.
The research of S. E. Konstein is supported in part
by the Russian Foundation for Basic Research (Grant No. 14-02-01171) and the
Ministry of Education and Science, Republic of Kazakhstan (Grant
No. 3106/GF4).
The research of I. V. Tyutin is supported in part by
the Russian Foundation for Basic Research (Grant No. 14-01-00489).
Citation:
S. E. Konstein, I. V. Tyutin, “Ideals generated by traces in the algebra of symplectic reflections H1,ν1,ν2(I2(2m))”, TMF, 187:2 (2016), 297–309; Theoret. and Math. Phys., 187:2 (2016), 706–717
This publication is cited in the following 2 articles:
M. A. Vasiliev, “From Coxeter higher-spin theories to strings and tensor models”, J. High Energy Phys., 2018, no. 8, 051
S. E. Konstein, I. V. Tyutin, “Ideals generated by traces or by supertraces in the symplectic reflection algebra $H_{1,\nu}(I_2(2m+1))$”, J. Nonlinear Math. Phys., 24:3 (2017), 405–425