Most libertarian political theories are historically grounded in the Natural Rights philosophy like Rothbard, Locke, and Aquinas; consequentalist philosophy like Mises and Mill; or the Objectivism of Ayn Rand. I’m here to propose something radically new, a synthesis of libertarianism and existential philosophy.
The major existentialist are known for being feudalists, (Kierkegaard and Nietzches), socialists (Ponty, Sartre, and Camus), or Nazis (Heidegger). How a philosophy known for being radically individualist was espoused by authoritarians I am not sure. But I do believe existentialism does intrinsically imply any sort of authortian politics.
In fact the tenants of existentialism, when combined with the theories of Robert Nozick and John Locke, gives us a concise libertarian political theory.