* The "persona" is a common term: It refers to the voice or character the poet creates to speak in the poem. It's a separate entity from the poet themselves, though it can be based on the poet's own experiences, thoughts, or feelings.
* "Speaker" is another common term: It's a more neutral term than "persona" and simply refers to the voice that's speaking in the poem.
* "Lyrical I" can be used in a formal context: It refers to the first-person speaker of a poem, particularly one that expresses the poet's personal feelings and thoughts.
Beyond these, there are other possibilities:
* A specific character: If the poem adopts the voice of a historical figure, a fictional character, or a specific animal or object, the poet becomes that entity.
* A metaphor: The poem might transform the poet into a natural element, a symbol, or an abstract concept. The "poet" could be represented by a river, a bird, or even "love" itself.
Ultimately, the term used depends on the poem's specific form, content, and the poet's intentions. Focus on analyzing the poem and how it shapes the voice and persona being presented.