No, orthodox interpretations of quantum mechanics do not necessarily lead to solipsism. Solipsism is the philosophical belief that only one's mind is certain to exist, and the external world and other minds are uncertain or unknowable.
Orthodox interpretations of quantum mechanics, such as the Copenhagen interpretation, the Many-Worlds interpretation, or the de Broglie-Bohm interpretation, focus on describing the probabilistic nature of quantum phenomena and the behavior of particles at the microscopic level. While these interpretations raise philosophical questions and debates about the nature of reality and the role of observation, they do not inherently imply solipsism.
The Copenhagen interpretation, for example, emphasizes the role of measurement and observer interaction in collapsing the wavefunction and determining the outcome of quantum events. However, it does not imply that only the observer's mind is real. It acknowledges the existence of an external reality and treats the observer as part of a larger physical system.
Similarly, the Many-Worlds interpretation suggests that the universe branches into multiple parallel realities with every quantum event. While it may challenge traditional notions of a single objective reality, it does not necessitate solipsism. It posits that multiple versions of the observer exist in different branches, and each observer experiences their own reality.
The de Broglie-Bohm interpretation introduces the notion of hidden variables and considers particles as having definite positions and trajectories, even though their behavior exhibits wave-like properties. It maintains an objective reality independent of observation.
It's important to note that interpretations of quantum mechanics are subject to ongoing debate, and philosophers and physicists hold different views on the implications and philosophical consequences of the theory. While some interpretations may raise philosophical questions, the majority of physicists do not consider solipsism as a necessary or inherent consequence of quantum mechanics.