"Wasp [played by Evangeline Lilly] sees Ghost approaching her and kicks a food cart in Ghost’s direction. Without breaking a sweat, Ghost dodges the food cart, in much the same way one quantum particle might dodge another.
Before the cart would have hit her, we see Ghost appear in at least three positions at once, each dodging the cart in a different way. After the cart passes through, the image of her walking straight forward (without having dodged) becomes dominant, while the multiple dodge positions fade away.
This is just how a particle behaves on a microscopic scale: we see Ghost existing in many places at once, yet she doesn’t always interact with objects that pass through one of her possible positions. An electron, for example, exists in many places at once—it doesn’t stand in an exact spot around the nucleus.
The dodge represents a smeared-out probability, where Ghost’s possible states (continue forwards, dodge left, dodge right, &c.) existed simultaneously. She then controls her phasing to select the non-interacting state, so she remains in a superposition of dodging in all possible ways until the cart passes through her position, effectively tunneling through the cart. Once the cart is gone, Ghost can continue forwards as if nothing happened, since, for her, nothing did happen—the possibility of interacting with the cart wasn’t selected." source
"As a result of a childhood accident, she is blessed and cursed with a unique set of superpowers: She can “phase” through solid objects and often appears as though her body parts are in multiple places at once. While moving, she leaves after-images of where she was that look, well, ghostly. Ceretti says his background in quantum mechanics helped him come up with that approach. “I knew that, in quantum mechanics, a particle can be in multiple places at the same time,” he says. “So that is when we started to explore, as a visual effects concept, how to show this, and we played around with time-manipulation and space-manipulation and multiple actions taking place at the same time." source
"The idea is that she was out of phase with this reality because she was entangled with multiple different realities very strongly," he explained. "It's actually what happens when you isolate a system from the rest of the environment and all of a sudden that system reverts back to its nascent quantum state, a state of superposition between multiple realities."
Ghost is often seen fading in and out and popping up all over the place in the film. That's precisely because she's entangled with multiple realities, explained Michalakis.
"The world that you're interacting with is trying to place the Ghost in a specific reality. As it's trying to do that, the light that is bouncing off of her body ends up getting mixed up and confused, creating a human superposition at the macroscopic scale." source
powers
Before the cart would have hit her, we see Ghost appear in at least three positions at once, each dodging the cart in a different way. After the cart passes through, the image of her walking straight forward (without having dodged) becomes dominant, while the multiple dodge positions fade away.
This is just how a particle behaves on a microscopic scale: we see Ghost existing in many places at once, yet she doesn’t always interact with objects that pass through one of her possible positions. An electron, for example, exists in many places at once—it doesn’t stand in an exact spot around the nucleus.
The dodge represents a smeared-out probability, where Ghost’s possible states (continue forwards, dodge left, dodge right, &c.) existed simultaneously. She then controls her phasing to select the non-interacting state, so she remains in a superposition of dodging in all possible ways until the cart passes through her position, effectively tunneling through the cart. Once the cart is gone, Ghost can continue forwards as if nothing happened, since, for her, nothing did happen—the possibility of interacting with the cart wasn’t selected." source
"As a result of a childhood accident, she is blessed and cursed with a unique set of superpowers: She can “phase” through solid objects and often appears as though her body parts are in multiple places at once. While moving, she leaves after-images of where she was that look, well, ghostly. Ceretti says his background in quantum mechanics helped him come up with that approach. “I knew that, in quantum mechanics, a particle can be in multiple places at the same time,” he says. “So that is when we started to explore, as a visual effects concept, how to show this, and we played around with time-manipulation and space-manipulation and multiple actions taking place at the same time." source
"The idea is that she was out of phase with this reality because she was entangled with multiple different realities very strongly," he explained. "It's actually what happens when you isolate a system from the rest of the environment and all of a sudden that system reverts back to its nascent quantum state, a state of superposition between multiple realities."
Ghost is often seen fading in and out and popping up all over the place in the film. That's precisely because she's entangled with multiple realities, explained Michalakis.
"The world that you're interacting with is trying to place the Ghost in a specific reality. As it's trying to do that, the light that is bouncing off of her body ends up getting mixed up and confused, creating a human superposition at the macroscopic scale." source