Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Kroyter, Michael"'
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:
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:
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
Autor:
Bursa, Francis, Kroyter, Michael
Publikováno v:
PoS LATTICE2010:047,2010
String field theory is a candidate for a full non-perturbative definition of string theory. We aim to define string field theory on a space-time lattice to investigate its behaviour at the quantum level. Specifically, we look at string field theory i
Externí odkaz:
http://arxiv.org/abs/1009.4414
Autor:
Kroyter, Michael
Publikováno v:
Adv. Theor. Math. Phys. 15, 741 (2011)
We present a new open superstring field theory, whose string fields carry an arbitrary picture number and reside in the large Hilbert space. The redundancy related to picture number is resolved by treating picture changing as a gauge transformation.
Externí odkaz:
http://arxiv.org/abs/0911.2962