ar X iv : h ep - t h / 04 07 23 0 v 3 1 3 A ug 2 00 4 Tube of ( Circle F , D 0 , D 2 ) Bound State in Melvin Background
نویسنده
چکیده
By using the Born-Infeld action we show that the m circular fundamental strings, n D2branes and k D0-branes could become a tubular bound state which is prevented from collapsing by the magnetic force in the Melvin background. However, if the ratio m/n is larger then a critical value the tube will become unstable and collapse to zero radius. We make analyses to find the critical value and tube radius therein. The tube configurations we found are different from the well known tubular bound states of straight fundamental strings, D0 and D2-branes, which are supported by the angular momentum. E-mail: [email protected] 2004/08/14
منابع مشابه
ar X iv : h ep - t h / 04 05 18 0 v 2 3 A ug 2 00 4 DAMTP
We study four-point correlation functions of 1 2-BPS operators of arbitrary weight for all dimensions d = 3, 4, 5, 6 where superconformal theories exist. Using harmonic superspace techniques, we derive the superconformal Ward identities for these correlators and present them in a universal form. We then solve these identities, employing Jack polynomial expansions. We show that the general solut...
متن کاملar X iv : h ep - p h / 04 02 19 0 v 2 2 6 M ay 2 00 4 1 Pentaquarks in the 10 F - and 10 F - plets
متن کامل
ar X iv : h ep - p h / 04 05 11 8 v 1 1 3 M ay 2 00 4 Understanding I = 2 ππ Interaction
A correct understanding and description of the I = 2 ππ S-wave interaction is important for the extraction of the I = 0 ππ S-wave interaction from experimental data and for understanding the I = 0 ππ S-wave interaction theoretically. With t-channel ρ, f 2 (1270) exchange and the ππ → ρρ → ππ box diagram contribution, we reproduce the ππ isotensor S-wave and D-wave scattering phase shifts and in...
متن کاملar X iv : h ep - t h / 04 08 12 5 v 1 1 7 A ug 2 00 4 Field theoretic models on covariant quantum spaces
متن کامل
ar X iv : h ep - t h / 04 08 19 3 v 1 2 5 A ug 2 00 4 Snyder noncommutative space - time from two - time physics
We show that the two-time physics model leads to a mechanical system with Dirac brackets consistent with the Snyder noncommutative space. An Euclidean version of this space is also obtained and it is shown that both spaces have a dual system describing a particle in a curved space-time. PACS numbers: 11.10.Nx, 02.40.Gh, 45.20.-d e-mail: [email protected] e-mail: [email protected] 1
متن کامل