On the relation between p-adic and ordinary strings

The amplitudes for the tree-level scattering of the open string tachyons, generalised to the field of p-adic numbers, define the p-adic string theory. There is empirical evidence of its relation to the ordinary string theory in the p_to_1 limit. We revisit this limit from a worldsheet perspective and argue that it is naturally thought of as a continuum limit in the sense of the renormalisation group.Comment: 13 pages harvmac (b), 2 eps figures; v2: revtex, shortened, published versio

The SO(N) principal chiral field on a half-line

We investigate the integrability of the SO(N) principal chiral model on a half-line, and find that mixed Dirichlet/Neumann boundary conditions (as well as pure Dirichlet or Neumann) lead to infinitely many conserved charges classically in involution. We use an anomaly-counting method to show that at least one non-trivial example survives quantization, compare our results with the proposed reflection matrices, and, based on these, make some preliminary remarks about expected boundary bound-states.Comment: 7 pages, Late

Innervation of the Forearm and Foot in the Ox (Bos taurus), Sheep (Ovis aries) and Goat (Capra hircus)

From a comparative standpoint and for the sake of applied or practical anatomy to satisfactorily accomplish the nerve block for various surgical procedures for both the fore- and hind extremities of the ox, sheep and goat, a comprehensive knowledge regarding the innervation and disposition of various nerves supplying the appendages in these species is essential

Innervation of the Forearm and Foot of the Domestic Pig

In order to accomplish various nerve blocks to perform satisfactory surgery a comprehensive knowledge about the innervation of the forearm and foot of the domestic pig is of prime importance. This study will also enable us to have a better understanding of the domestic species differences, if any

The Arterial Supply to Appendages of the Goat (Capra hircus)

The arterial blood supply of both the thoracic and the pelvic limbs of the goat are seldom described in the standard textbooks or in articles, especially in English literature (see bibliography). The assumption has been, perhaps, that there is no significant difference between the vascular patterns in the appendages of the goat and those of the ox and sheep

Comparative Study on the Nomenclature of the Nerves of the Forearm and Forefoot of the Domestic Animals

A review of the textbooks of the anatomy of domestic animals, applied anatomy, operative surgery and various other publications pertaining to these regions, both in English and foreign literature, indicate that a variety of terms which are often very confusing are used to designate nerves, especially in the digital region. Therefore, the purpose of this paper is to summarize and compare the various terminologies of the nerves of the forearm (antebranchium) and forefoot (manus) in our domestic animals

Innervation of the Forearm and Foot of the Horse

In order to accomplish various nerve blocks to perform satisfactory surgery and for the diagnosis of lameness in the horse, a comprehensive knowledge regarding the nerve supply of different nerves in the region of the forearm and foot is essential. A specific knowledge about the innervation of a particular region many, in turn, aid in the diagnosis of the area of involvement when certain nerves are affected by fracture, trauma, tumor, etc. Therefore, this investigation has both academic and practical application

Conformal description of horizon's states

The existence of black hole horizon is considered as a boundary condition to be imposed on the fluctuating metrics. The coordinate invariant form of the condition for class of spherically symmetric metrics is formulated. The diffeomorphisms preserving this condition act in (arbitrary small) vicinity of the horizon and form the group of conformal transformations of two-dimensional space ($r-t$ sector of the total space-time). The corresponding algebra recovered at the horizon is one copy of the Virasoro algebra. For general relativity in $d$ dimensions we find an effective two-dimensional theory governing the conformal dynamics at the horizon universally for any $d\geq 3$. The corresponding Virasoro algebra has central charge $c$ proportional to the Bekenstein-Hawking entropy. Identifying the zero-mode configuration we calculate $L_0$. The counting of states of this horizon's conformal field theory by means of Cardy's formula is in complete agreement with the Bekenstein-Hawking expression for the entropy of black hole in $d$ dimensions.Comment: 13 pages, latex, no figures; the final version to appear in Phys. Lett.

Exact noncommutative solitons in p-adic strings and BSFT

The tachyon field of p-adic string theory is made noncommutative by replacing ordinary products with noncommutative products in its exact effective action. The same is done for the boundary string field theory, treated as the p -> 1 limit of the p-adic string. Solitonic lumps corresponding to D-branes are obtained for all values of the noncommutative parameter theta. This is in contrast to usual scalar field theories in which the noncommutative solitons do not persist below a critical value of theta. As theta varies from zero to infinity, the solution interpolates smoothly between the soliton of the p-adic theory (respectively BSFT) to the noncommutative soliton.Comment: 1+14 pages (harvmac b), 1 eps figure, v2: references added, typos correcte