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We investigate vapor homogeneous nucleation in a superheated Lennard Jonesliquid with computer simulations. Special simulation techniques are required toaddress this study since the nucleation of a critical vapor bubble --one thathas equal chance to grow or shrink-- in a moderately superheated liquid is arare event. We use the Seeding method, that combines Classical NucleationTheory with computer simulations of a liquid containing a vapor bubble toprovide bubble nucleation rates in a wide temperature range. Seeding has beensuccessfully applied to investigate the nucleation of crystals in supercooledfluids and here we apply it for the fist time --to the best of our knowledge--to the liquid-to-vapor transition. We find that Seeding provides nucleationrates that are consistent with independent calculations not based on theassumptions of Classical Nucleation Theory. Different criteria to determine theradius of the critical bubble give different rate values. The accuracy of eachcriterion depends of the degree of superheating. Moreover, Seeding simulationsshow that the surface tension depends on pressure for a given temperature.Therefore, using Classical Nucleation Theory with the coexistence surfacetension does not provide good estimates of the nucleation rate.

Seeding Approach to Bubble Nucleation in Superheated Lennard Jones Fluids