Bäcklund transformations and local conservation laws for self-dual Yang-Mills fields with arbitrary gauge group

1988 ◽  
Vol 127 (3) ◽  
pp. 167-170 ◽  
Author(s):  
C.J. Papachristou ◽  
B.Kent Harrison
1980 ◽  
Vol 91 (3-4) ◽  
pp. 387-391 ◽  
Author(s):  
A.T. Ogielski ◽  
M.K. Prasad ◽  
A. Sinha ◽  
Ling-Lie Chau Wang

Author(s):  
Claire R. Gilson ◽  
Masashi Hamanaka ◽  
Jonathan J. C. Nimmo

We present Bäcklund transformations for the non-commutative anti-self-dual Yang–Mills equation where the gauge group is G = G L (2), and use it to generate a series of exact solutions from a simple seed solution. The solutions generated by this approach are represented in terms of quasi-determinants. We also explain the origins of all the ingredients of the Bäcklund transformations within the framework of non-commutative twistor theory. In particular, we show that the generated solutions belong to a non-commutative version of the Atiyah–Ward ansatz.


2009 ◽  
Vol 51 (A) ◽  
pp. 83-93 ◽  
Author(s):  
CLAIRE R. GILSON ◽  
MASASHI HAMANAKA ◽  
JONATHAN J. C. NIMMO

AbstractWe present Bäcklund transformations for the non-commutative anti-self-dual Yang–Mills equations where the gauge group is G = GL(2) and use it to generate a series of exact solutions from a simple seed solution. The solutions generated by this approach are represented in terms of quasi-determinants and belong to a non-commutative version of the Atiyah–Ward ansatz. In the commutative limit, our results coincide with those by Corrigan, Fairlie, Yates and Goddard.


We have found new hierarchies of Korteweg–de Vries and Boussinesq equations which have multiple soliton solutions. In contrast to the stan­dard hierarchy of K. de V. equations found by Lax, these equations do not appear to fit the present inverse formalism or possess the various pro­perties associated with it such as Bäcklund transformations. The most interesting of the new K. de V. equations is ( u nx ≡ ∂ n u /∂ x n ) ( u 4 x + 30 uu 2 x + 60 u 3 ) x + u t = 0. We have proved that this equation has N -soliton solutions but we have been able to find only two soliton solutions for the rest of this hierarchy. The above equation has higher conservation laws of rank 3, 4, 6 and 7 but none of rank 2, 5 and 8 and hence it would seem that an unusual series of conservation laws exists with every third one missing. Apart from the Boussinesq equation itself, which has N -soliton solutions, ( u xx + 6 u 2 ) xx + u xx – u tt = 0 we have found only two-soliton solutions to the rest of this second class. The new equations have bounded oscillating solutions which do not occur for the K. de V. equation itself.


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