Zobrazeno 1 - 10
of 129
pro vyhledávání: '"A, Kroyter"'
Autor:
Giaccari, Stefano, Kroyter, Michael
Publikováno v:
JHEP05(2024)017
We reexamine democratic open string field theories, namely, theories in which string fields are not constrained to a single picture number and picture changing is obtained as a gauge transformation. We describe several possibilities for regular free
Externí odkaz:
http://arxiv.org/abs/2403.01552
Autor:
Stefano Giaccari, Michael Kroyter
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-36 (2024)
Abstract We reexamine democratic open string field theories, namely, theories in which string fields are not constrained to a single picture number and picture changing is obtained as a gauge transformation. We describe several possibilities for regu
Externí odkaz:
https://doaj.org/article/c8021352f6834d1aa53215ffee75c8a8
Autor:
Bursa, Francis, Kroyter, Michael
Publikováno v:
JHEP04(2021)181
We continue our study of contour deformation as a practical tool for dealing with the sign problem using the $d$-dimensional Bose gas with non-zero chemical potential as a toy model. We derive explicit expressions for contours up to the second order
Externí odkaz:
http://arxiv.org/abs/2103.08948
Autor:
Bursa, Francis, Kroyter, Michael
Publikováno v:
JHEP12(2018)054
We suggest an approach for simulating theories with a sign problem that relies on optimisation of complex integration contours that are not restricted to lie along Lefschetz thimbles. To that end we consider the toy model of a one-dimensional Bose ga
Externí odkaz:
http://arxiv.org/abs/1805.04941
Autor:
Francis Bursa, Michael Kroyter
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-30 (2021)
Abstract We continue our study of contour deformation as a practical tool for dealing with the sign problem using the d-dimensional Bose gas with non-zero chemical potential as a toy model. We derive explicit expressions for contours up to the second
Externí odkaz:
https://doaj.org/article/66873b716abd40cda17f8397cfc6004c
Autor:
Bursa, Francis, Kroyter, Michael
Publikováno v:
JHEP10(2014)074
We propose the use of lattice field theory for the study of string field theory at the non-perturbative quantum level. We identify many potential obstacles and examine possible resolutions thereof. We then experiment with our approach in the particul
Externí odkaz:
http://arxiv.org/abs/1405.5089
Autor:
Kroyter, Michael
Publikováno v:
JHEP 1307:019,2013
We examine the possibility of constructing analytical solutions describing marginal deformations in the open superstring field theory that is based on the non-minimal pure-spinor formalism. It is found out that some methods used for constructing solu
Externí odkaz:
http://arxiv.org/abs/1211.5172
Publikováno v:
JHEP 1203:030,2012
The WZW form of open superstring field theory has linearized gauge invariances associated with the BRST operator Q and the zero mode eta_0 of the picture minus-one fermionic superconformal ghost. We discuss gauge fixing of the free theory in a simple
Externí odkaz:
http://arxiv.org/abs/1201.1761
Autor:
Kroyter, Michael
Publikováno v:
Prog.Theor.Phys.Suppl.188:244-253,2011
This work is my contribution to the proceedings of the conference "SFT2010 - the third international conference on string field theory and related topics" and it reflects my talk there, which described the democratic string field theory and its gauge
Externí odkaz:
http://arxiv.org/abs/1101.1314
Autor:
Kroyter, Michael
Publikováno v:
JHEP 1103:081,2011
We show that a partial gauge fixing of the NS sector of the democratic-picture superstring field theory leads to the non-polynomial theory. Moreover, by partially gauge fixing the Ramond sector we obtain a non-polynomial fully RNS theory at pictures
Externí odkaz:
http://arxiv.org/abs/1010.1662