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Universal distribution of random matrix eigenvalues near the 'birth of a cut' transition

B Eynard

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Figure 1

Figure 1. The `birth of a cut' critical potential is such that one of the potential wells of the effective potential is just at the Fermi level. At a νth order critical point, the effective potential behaves like V_{\mathrm {eff}}(e)+
{(1/ 2\nu !)}V^{(2\nu)}_{\mathrm {eff}}(e)\, (x-e)^{2\nu }+\cdots
.



Figure 2

Figure 2. The `birth of a cut' density of eigenvalues is such that one of the connected components of the support contains a very small number of eigenvalues ({\ll } n ).



Figure 3

Figure 3. Behaviour of the second derivative of the classical free energy with respect to t near the transition.



Figure 4

Figure 4. Behaviour of \epsilon_u(u-\ubar)-{1\over 2} .



Figure 5

Figure 5. Behaviour of γn.




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