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We investigate the spectrum of physical states in the W3 string theory, up to level 2 for a multi-scalar string, and up to level 4 for the two-scalar string. The (open) W3 string has a photon as its only massless state. By using screening charges to study the null physical states in the two-scalar W3 string, we are able to learn about the gauge symmetries… (More)

- Hai-hao Lu, Chris Pope, S . Schrans
- 2008

We present a detailed investigation of scattering processes in W3 string theory. We discover further physical states with continuous momentum, which involve excitations of the ghosts as well as the matter, and use them to gain a better understanding of the interacting theory. The scattering amplitudes display factorisation properties, with states from the… (More)

- Hai-hao Lu, Christopher Pope, Kris Thielemans, X-G Wang, Kejian Xu, Strada Costiera
- 1994

In this paper, we examine the conditions under which a higher-spin string theory can be quantised. The quantisability is crucially dependent on the way in which the matter currents are realised at the classical level. In particular, we construct classical realisations for the W2,s algebra, which is generated by a primary spin-s current in addition to the… (More)

We construct new multi-field realisations of the N = 2 super-W3 algebra, which are important for building super-W3 string theories. We derive the structure of the ghost vacuum for such theories, and use the result to calculate the intercepts. These results determine the conditions for physical states in the super-W3 string theory. ⋆ Supported in part by the… (More)

- M . Amenomori, Shinobu Ayabe, +57 authors Zhaxisangzhu
- 2008

Since 1996, a hybrid experiment consisting of the emulsion chamber and burst detector array and the Tibet-II air-shower array has been operated at Yangbajing (4300 m above sea level, 606 g/cm2) in Tibet. This experiment can detect air-shower cores, called as burst events, accompanied by air showers in excess of about 100 TeV. We observed about 4300 burst… (More)

The efficiency of a short-term treatment with an intravaginal device containing progesterone (CIDR) combined with pregnant mares’ serum gonadotrophin (PMSG) and prostaglandin analogue (PGF2α) was evaluated for the induction of estrus, initiation of cyclic activity, and fertility in postpartum suckled yak cows. Seventy-five postpartum suckled yak cows were… (More)

- Mario De Vincenzi, Camilla Bacci, +77 authors Qingchuan Zhu
- 2003

presented by M. De Vincenzi for the ARGO collaboration: C. Bacci a, K.Z. Bao b, F. Barone C, B. Bartoli c, D. Bastieri d, P. Bernardini e, S. Bussino a, E. Calloni c, B.Y.Cao f, R. Cardarelli 9 S. Catalanotti c A. Cavaliere 9, F. Cesaroni e, p. Creti e, Danzengluobu h B. D'Ettorre Piazzoli c, M. De Vincenzi a, T. Di Girolamo c, G. Di Sciascio i, Z.Y. Feng… (More)

It has been known for some time that W algebras can be realised in terms of an energy-momentum tensor together with additional free scalar fields. Some recent results have shown that more general realisations are also possible. In this paper, we consider a wide class of realisations that may be obtained from the Miura transformation, related to the… (More)

- Z . Khviengia, Hai-hao Lu, Christopher Pope, Ergin Sezgin, X-G Wang, Kejian Xu
- 1994

In this paper we construct a (2, 2) dimensional string theory with manifest N = 1 spacetime supersymmetry. We use Berkovits’ approach of augmenting the spacetime supercoordinates by the conjugate momenta for the fermionic variables. The worldsheet symmetry algebra is a twisted and truncated “small” N = 4 superconformal algebra. The physical spectrum of the… (More)

- Shi-xiao W Jiang, Hai-hao Lu, Douglas Zhou, David Cai
- Physical review. E, Statistical, nonlinear, and…
- 2014

We study the nonlinear dispersive characteristics in β-Fermi-Pasta-Ulam (FPU) chains in both thermal equilibrium and nonequilibrium steady state. By applying a multiple scale analysis to the FPU chain, we analyze the contribution of the trivial and nontrivial resonance to the renormalization of the dispersion relation. Our results show that the contribution… (More)