24,286 results for qua

arxiv.org/abs/1011.5098v3

Variational ansatz for quasispecies in the Eigen model

We investigate the error threshold for the emergence of quasispecies in the Eigen model. By mapping to to an effective Hamiltonian ruled by the "imaginary-time" Schrödinger equation, a variational ansatz is proposed and applied to calculate various...

arxiv.org/abs/hep-th/0302002v1

Pictures and equations of motion in Lagrangian quantum field theory

The Heisenberg, interaction, and Schrödinger pictures of motion are considered in Lagrangian (canonical) quantum field theory. The equations of motion (for state vectors and field operators) are derived for arbitrary Lagrangians which are polynomi...

arxiv.org/abs/2511.16968v1

Cylindric quasi-implication algebras

In this note, we study the operation of Sasaki hook within the setting of quantum cylindric algebras by introducing cylindric quasi-implication algebras. It is first demonstrated that every quantum cylindric algebra can be converted into a cylindric...

arxiv.org/abs/2601.00010v1

On the measurement problem in quantum mechanics: a simple proposal

Some of the problems connected with the interpretation of quantum mechanics are enumerated, in particular those related to some well known paradoxes and, above all, to the measurement process. We then show how the so called "Physics Laboratory Assump...