Comments on real tachyon vacuum solution without square roots

Abstract

Abstract:We analyze the consistency of a recently proposed real tachyon vacuum solution without square roots in open bosonic string field theory. We show that the equation of motion contracted with the solution itself is satisfied. Additionally, by expanding the solution in the basis of the curly L 0 and the traditional L 0 eigenstates, we evaluate numerically the vacuum energy and obtain a result in agreement with Sen's conjecture.

Numerical solution for tachyon vacuum in the Schnabl gauge

“…In the context of Witten's open bosonic string field theory [1], using a solution for tachyon condensation in the Schnabl gauge [2], the first analytic proof of Sen's first conjecture [3,4] has been performed. Based on Schnabl's work, many analytical and numerical tools have been developed [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] and the techniques have been employed in the construction and analysis of new analytical solutions [22][23][24][25][26][27][28][29][30][31][32][33].…”

Numerical solution of open string field theory in Schnabl gauge

“…Schnabl's solution for tachyon condensation [1] in Witten's open bosonic string field theory [2] has been a remarkable achievement which has provided an elegant analytic proof of Sen's first conjecture [3,4]. Schnabl's seminal work has allowed the development of modern analytical and numerical techniques [5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21] which have been used to explore new analytic solutions [22,23,24,25,26,27,28,29,30,31,32,33], and the bosonic results have been extended to the case of open superstring field theories [34,35,36,37,38,39,40,41,42,43,44,45].…”