求符合主流物理学且无主观性的‘现实’定义（基于本征态视角）

Great question—you’re zeroing in on a really important, often misunderstood angle of quantum reality, especially by focusing on avoiding observer-dependent frameworks. Let’s unpack this using mainstream, experimentally verified physics:

你提到想要一个完全规避主观性的“现实”定义——排除类似意识导致波函数坍缩、或把可观测宇宙仅视为多世界理论中我们所处分支这类观点——这和大多数一线物理学家日常定义“现实”的思路完全契合。

Core of an Objective Reality: Reproducible Eigenstate Measurements #

At the heart of mainstream quantum mechanics (think the standard Copenhagen interpretation stripped of observer-centric language, or quantum field theory’s foundational framework), objective reality is rooted in eigenstates with verifiable, fixed physical properties.

• When we measure a quantum system, we’re almost always interacting with one of its eigenstates—these aren’t "created" by observation; they’re inherent states of the system where a specific physical quantity (like energy, angular momentum) has a definite, measurable value.
• For example, the electron orbitals in an atom are exactly energy eigenstates. Their energy levels are fixed, repeatable, and consistent across every experiment—no matter who performs the measurement, or when, you’ll get the same energy value. This inter-subjective verifiability is what makes this framework completely free of subjective bias.

Why Eigenstate Certainty Builds Our Observable World #

You hit on a key point: the "apparently anomalous" certainty of these eigenstate energies is what underpins the stability of the macroscopic world. Here’s why:

• While the uncertainty principle limits simultaneous measurement of some pairs of properties (like position and momentum), energy is a quantity that has strict, well-defined eigenstates for bound systems (like electrons in atoms).
• This fixed energy structure means atoms don’t spontaneously decay or change their configuration randomly; chemical bonds rely on these fixed energy differences to form stable molecules; and this stability scales up to the macroscopic objects and structures we interact with daily. It’s not "anomalous"—it’s the predictable, objective foundation of our reality.

Avoiding Subjectivity: Ditch Observer-Dependent Interpretations #

To fully steer clear of subjective frameworks, we can anchor our definition of reality to the objective state space of quantum systems:

• A quantum system’s state exists in Hilbert space regardless of observation. Eigenstates are the "basis vectors" of this space with definite physical values.
• Measurement is simply a process that couples the system to a macroscopic detector, allowing us to extract one of these pre-existing eigenstate values—no consciousness required, no branching universes we have to "choose" between. This is the framework used in almost all experimental physics, because it’s testable, consistent, and completely observer-independent.

内容的提问来源于stack exchange，提问作者willjones1982