Of course not. There's also a historical precedent: the taking of power by the Bolsheviks and the founding of USSR, with their unilateral repudiation of any and all debts incurred by the former entity -Tzarist Russia.
That obviously didn't go down too well with creditors, but in the state the world was at the time, there was not much they could do but suck it down. Nevertheless, there were people who held on those Tzarist bonds for nearly a century. Eventually, a -very small- part of it was paid back by post-USSR governments. So there's no positive indication that a sizeable debt would be easily "forgotten" in the short-medium term, especially if the debtor wasn't a big Red Scary monster like the USSR.
I know what would happen to Greece, if such a dissolution was to take place today: foreign powers would not allow such a "void of power" to be formed, and would quickly instate a"pro-debt" puppet government (a dictator, if need be) who'd continue pursuing the same policies that are pursued today towards repaying the debt, perhaps even harsher. If one or more "anti-debt" factions would form and part of the -former- country was under their control, then they would be declared as unlawful and the officially recognized "pro-debt" government would be armed and aided in crushing them (yes, with a civil war if need be).
Of course, Greece is a small and weak country and too close to its would-be enemies (in such a circumstance, pretty much ALL other EU, NATO and UN forces would suddenly be hostile, at least towards the "anti-debt" factions). The USA on the other hand is geographically isolated from the range of any power remotely able to harm it with anything other than ICBMs, and even if different states/factions would form, most if not all of them would remain in control of nuclear weapons....
These would probably be the biggest manipulators in regards to a pro-debt regime, in the aftermath of the U.S. gov't dissolving. But the biggest would be the United States itself; our private institutions currently own the most of the gov't's 16 trillion dollar debt. The pro-debt regime would be a non-violent takeover from plutocrats, and big business interests, aiming to totally eliminate the debt the as well as the welfare-state. Now that I think of it, ...this seems like a possible scenario.
The gov't purposefully commits suicide , and is then usurped by the people it owed money to.
Last edited by Kontra Kommando on 10-01-13 at 18:47