In the Star Wars universe, the answer is a resounding NO.
Here's why:
* Plasma Blades: Lightsabers emit highly focused beams of plasma, a superheated ionized gas. This plasma is contained by a magnetic field generated by the lightsaber's kyber crystal.
* Repulsion: The magnetic fields of two clashing lightsabers would repel each other. This repulsion is why lightsaber blades don't pass through each other.
* The Force: While not a scientific explanation, The Force is a key element in Star Wars. The Force allows Jedi and Sith to control and manipulate the energy of the lightsaber, making it difficult for one blade to penetrate another.
In reality, however, it's a different story.
* Plasma: Plasma is an extremely unstable state of matter. It would be incredibly challenging to generate a stable plasma beam like a lightsaber.
* Magnetic Fields: While magnetic fields can contain plasma, they are not strong enough to create a solid barrier.
* Collisions: If two plasma beams collided, they would likely merge and dissipate, creating a large, unstable plasma cloud.
Conclusion:
While a lightsaber might be able to cut through other materials, it's unlikely it could cut through another lightsaber in the way depicted in Star Wars. The laws of physics would likely prevent such a feat, though, as always, we're talking about a fictional universe where anything is possible with enough imagination!