Zobrazeno 1 - 10
of 340
pro vyhledávání: '"Boonstra H"'
Publikováno v:
JHEP 9901 (1999) 003
We extend the correspondence between adS-supergravities and superconformal field theories on the adS boundary to a correspondence between gauged supergravities (typically with non-compact gauge groups) and quantum field theories on domain walls.
Externí odkaz:
http://arxiv.org/abs/hep-th/9807137
Publikováno v:
Phys.Lett.B411:59-67,1997
We consider a series of duality transformations that leads to a constant shift in the harmonic functions appearing in the description of a configuration of branes. This way, for several intersections of branes, we can relate the original brane config
Externí odkaz:
http://arxiv.org/abs/hep-th/9706192
Publikováno v:
Phys. Rev. D 53, 7206 (1996)
We show how a solitonic ``magnetically'' charged $p$-brane solution of a given supergravity theory, with the magnetic charge carried by an antisymmetric tensor gauge field, can be generalized to a dyonic solution. We discuss the cases of ten-dimensio
Externí odkaz:
http://arxiv.org/abs/hep-th/9508091
Autor:
Boonstra, H. J., de Roo, M.
Publikováno v:
Phys.Lett. B353 (1995) 57-63
We reduce the dual version of $D=10$, $N=1$ supergravity coupled to $n$ vector fields to four dimensions, and derive the $SL(2,R)\times O(6,6+n)$ transformations which leave the equations of motion invariant. For $n=0$ $SL(2,R)$ is also a symmetry of
Externí odkaz:
http://arxiv.org/abs/hep-th/9503038
Publikováno v:
Phys. Lett. B346 (1995) 269-274
We discuss a realization of the bosonic string as a noncritical $W_3$-string. The relevant noncritical $W_3$-string is characterized by a Liouville sector which is restricted to a (non-unitary) $(3,2)$ $W_3$ minimal model with central charge contribu
Externí odkaz:
http://arxiv.org/abs/hep-th/9409186
Autor:
Boonstra, H. J.
Publikováno v:
Class.Quant.Grav.11:1941-1960,1994
We study the cohomology of the critical $W_4$ string using the $W_4$ BRST charge in a special basis in which it contains three separately nilpotent BRST charges. This allows us to obtain the physical operators in three steps. In the first step we obt
Externí odkaz:
http://arxiv.org/abs/hep-th/9401164
Publikováno v:
Nucl.Phys. B411 (1994) 717-744
We perform a classical BRST analysis of the symmetries corresponding to a generic $w_N$-algebra. An essential feature of our method is that we write the $w_N$-algebra in a special basis such that the algebra manifestly has a ``nested'' set of subalge
Externí odkaz:
http://arxiv.org/abs/hep-th/9307046
Publikováno v:
Phys.Lett. B308 (1993) 34-41
We discuss the conditions under which the BRST operator of a $W$-string can be written as the sum of two operators that are separately nilpotent and anticommute with each other. We illustrate our results with the example of the non-critical $W_3$-str
Externí odkaz:
http://arxiv.org/abs/hep-th/9303051
Publikováno v:
Phys.Lett. B292 (1992) 307-314
We perform a systematic investigation of free-scalar realisations of the Za\-mo\-lod\-chi\-kov $W_3$ algebra in which the operator product of two spin-three generators contains a non-zero operator of spin four which has vanishing norm. This generalis
Externí odkaz:
http://arxiv.org/abs/hep-th/9209065
Autor:
van der Lee, G.H., Boonstra, H.
In het Nannewiid is tussen 1993 en 1995 een omvangrijk pakket herstelmaatregelen uitgevoerd om de waterkwaliteit te verbeteren. In deze periode zijn de nutriëntengehaltes in het meer afgenomen van hypertroof naar meso-eutroof rond 2005, het doorzic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::127a52af04d372062e9fbcb526edcb6c
https://research.wur.nl/en/publications/dertig-jaar-ecologisch-herstel-van-het-nannewiid-analyses-van-de-
https://research.wur.nl/en/publications/dertig-jaar-ecologisch-herstel-van-het-nannewiid-analyses-van-de-